Chemistry Ch. 17 Test Bank

8/10/2019 Chemistry Ch. 17 Test Bank

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Chapter 17 - Solubility and Complex-Ion Equilibria

1. Cation C and anion A form an ionic compound for whichKsp=s2, wheresis the molar

solubility of the ionic compound. Which of Figures IIII represent!s" possible results of the

mi#ing of an a$ueous solution containing cation C with an a$ueous solution containing

anion A%

A" only I

&" only IIIC" both I and III

'" both I and II(" only II

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.1

0&+ Write solubility product e#pressions. !(#ample 1/.1"-0+ solubility solubility e$uilibria 3(4+ solubility product constant

5*C+ general chemistry

2. Cation C and anion A form an ionic compound for whichKsp= 6s7, wheresis the molar

solubility of the ionic compound. Which of Figures IIII represent!s" possible results of the

mi#ing of an a$ueous solution containing cation C with an a$ueous solution containing

anion A%

A" only III&" only II

C" both I and II

'" only I(" both I and III

A)*+ C -*+ 1 'IF+ moderate (F+ 1/.1

0&+ Write solubility product e#pressions. !(#ample 1/.1"


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-0+ solubility solubility e$uilibria 3(4+ solubility product constant


7. Which of the following particulate 8iews is9are consistent with a heterogeneous

e$uilibrium%

I II III

A" I only

&" II onlyC" III only

'" II and III

(" I, II, and III

A)*+ C -*+ 1 'IF+ easy (F+ 1/.1

0&+ Write solubility product e#pressions. !(#ample 1/.1"

-0+ solubility solubility e$uilibria

6. What is the solubility product e#pression for Al!0:"7%

A" Ksp= ;Al7


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&" Ksp= ;7@n2


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(" Ksp= ;*n2


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A)*+ A -*+ 1 'IF+ moderate (F+ 1/.1

0&+ 'efine molar solubility. -0+ solubility solubility e$uilibria3(4+ solubility product constant 5*C+ general chemistry

17. Figures IIE represent ionic compounds formed upon the mi#ing of an a$ueous solutioncontaining cation C with an a$ueous solution containing anion A. Identify the figure!s" that

represent!s" products for whichKsp= 1Ds>, wheresis the molar solubility of the ionic

compound.

A" only II

&" both I and IIC" only IE

'" only III

(" only I

A)*+ C -*+ 1 'IF+ moderate (F+ 1/.1

0&+ 'efine molar solubility. -0+ solubility solubility e$uilibria

3(4+ solubility product constant 5*C+ general chemistry

16. What is the relationship between molar solubility !s" andKspfor calcium fluoride%

A"

&"

C"

'"

("

A)*+ A -*+ 1 'IF+ easy (F+ 1/.1



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1>. What is the correct mathematical e#pression for finding the molar solubility !s" of *n!0:"2%

A" 2s7=Ksp&" 6s7=KspC" 1Ds>=Ksp'" 2s2=Ksp(" s7=Ksp

A)*+ & -*+ 1 'IF+ easy (F+ 1/.1


1?. -he concentration of calcium carbonate in a saturated a$ueous solution of the salt at 2>C is

?./1 1D>

M. What is theKspof this sparingly soluble salt%

A" 6.>D 1D

&" 1.21 1D12

C" >.6/ 1D1?

'" .1 1D7

(" 6.D? 1D2

A)*+ A -*+ 1 'IF+ easy (F+ 1/.10&+ Calculate 3sp from the solubility !simple e#ample". !(#ample 1/.2"


1/. -he solubility of strontium carbonate in water at 2>C is 6.>D 1D7

g9B. What is theKspof

this sparingly soluble salt%

A" .7D 1D1D

&" 1.17 1D17

C" 2.76 1D1/

'" >.>2 1D7

("7.12

1D

2

A)*+ A -*+ 1 'IF+ easy (F+ 1/.1

0&+ Calculate 3sp from the solubility !simple e#ample". !(#ample 1/.2"-0+ solubility solubility e$uilibria

1. After mi#ing an e#cess bCl2with a fi#ed amount of water, it is found that the e$uilibrium

concentration of b2

C" 2.> 1D6

'" 6.

1D

2

(" 1.D 1D?

A)*+ & -*+ 1 'IF+ moderate (F+ 1/.1

0&+ Calculate 3sp from the solubility !more complicated e#ample".!(#ample 1/.7"-0+ solubility solubility e$uilibria 3(4+ solubility product constant



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1. -he solubility of lead!II" sulfate is 6.D 1D2g9B. What is the solubility product constant

for lead!II" sulfate%A" 1./ 1D

&" 1.7 1D6

C" 1.? 1D7

'" 6.? 1D1>

(" . 1D12

A)*+ A -*+ 1 'IF+ moderate (F+ 1/.1

0&+ Calculate 3sp from the solubility !more complicated e#ample".!(#ample 1/.7"

-0+ solubility solubility e$uilibria 3(4+ solubility product constant5*C+ general chemistry

2D. -he solubility of sil8er!I" carbonate is 7.? 1D2g9B. What is the solubility product

constant for sil8er!I" carbonate%

A" 6.6 1D1>

&" . 1D12

C" 1./ 1D

'" 1.7 1D6

(" 1.7 1D7

A)*+ & -*+ 1 'IF+ moderate (F+ 1/.10&+ Calculate 3sp from the solubility !more complicated e#ample".!(#ample 1/.7"



21. -he hydro#ide ion concentration of a saturated solution of Fe!0:"2is 1.1? 1D>

M. What

is the solubility product constant for Fe!0:"2%

A" /.D 1D1?

&" ?.26 1D1>

C" 1.>? 1D1>

'" 7.61 1D7

(" 2.2? 1D2

A)*+ A -*+ 1 'IF+ moderate (F+ 1/.1

0&+ Calculate 3sp from the solubility !more complicated e#ample".!(#ample 1/.7"-0+ solubility solubility e$uilibria )0-+ (EI*('

22. -he sil8erGion concentration in a saturated solution of sil8er!I" chromate is 1.7 1D6M.

What isKspfor sil8er!I" chromate%

A" 2. 1D1?

&" 6.2 1D

C" . 1D12

'" 1.1 1D12

(" 1./ 1D

A)*+ ' -*+ 1 'IF+ difficult (F+ 1/.1

0&+ Calculate 3sp from the solubility !more complicated e#ample".!(#ample 1/.7"


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27. Which of the following salts has the highest molar solubility in water%

A" *rC07!Ksp= .7 1D1D"

&" &a*06 !Ksp= 1.1 1D1D"

C" b* !Ksp= 2.> 1D2/"

'"&aCr0

6

!Ksp

= 1.2

1D

1D

"(" AgCl !Ksp= 1. 1D1D"

A)*+ A -*+ 1 'IF+ easy (F+ 1/.1

0&+ Calculate the solubility from 3sp. !(#ample 1/.6"

-0+ solubility solubility e$uilibria3(4+ solubility product constant relati8e solubilities 5*C+ general chemistry

26. Which of the following salts has the lowest molar solubility%

A" *rC07!Ksp= .7 1D1D"

&" 5n* !Ksp= 2.> 1D1D"

C"&aF2!Ksp= 1.D

1D

?

"'" &a*06!Ksp= 1.1 1D1D"

(" AgCl !Ksp= 1. 1D1D"

A)*+ ' -*+ 1 'IF+ easy (F+ 1/.10&+ Calculate the solubility from 3sp. !(#ample 1/.6"


3(4+ solubility product constant relati8e solubilities 5*C+ general chemistry

2>. anH the following salts in order of increasing molar solubility.

*alt Ksp

&a*06 1.1 1D1D

AgCl 1. 1D1D

&aC07 .1 1D

Cd* 1D2/

b*06 1. 1D

A" Cd* AgCl &a*06 &aC07 b*06&" Cd* AgCl &aC07 &a*06 b*06C" Cd* &a*06 AgCl &aC07 b*06'" b*06 &aC07 AgCl &a*06 Cd*

(" b*06 &aC07 &a*06 AgCl Cd*

A)*+ C -*+ 1 'IF+ easy (F+ 1/.1



2?. A saturated solution of which of the following salts will ha8e the lowest molar concentrationof chromate ion%


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A" &aCr06!Ksp= 2.1 1DG1D"

&" CuCr06!Ksp= 7.? 1DG?"

C" Ag2Cr06!Ksp= 1.2 1DG12"

'" :g2Cr06!Ksp= 2.D 1DG"

(" -l2Cr06!Ksp= . 1DG17"

A)*+ A -*+ 1 'IF+ easy (F+ 1/.10&+ Calculate the solubility from 3sp. !(#ample 1/.6"


2/. A saturated solution of which of the following salts will ha8e the greatest molar

concentration of sil8er ion%

A" Ag2* !Ksp= 1DG>1"

&" AgCl !Ksp= 1. 1DG1D"

C" Ag2Cr06!Ksp= 1.2 1DG12"

'" Ag2C07!Ksp= .1 1DG12"

(" Ag6Fe!C)"? !Ksp= .> 1DG6>"

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.10&+ Calculate the solubility from 3sp. !(#ample 1/.6"-0+ solubility solubility e$uilibria

2. What is the solubility !in g9B" of aluminum hydro#ide at 2>C% -he solubility product

constant for aluminum hydro#ide is 6.? 1D77at 2>C.

A" 7.? 1D71g9B

&" .2 1D1Dg9B

C" 2. 1D/g9B

'" >.7 1D1>g9B

(" 1.

1D

71

g9BA)*+ C -*+ 1 'IF+ easy (F+ 1/.1

0&+ Calculate the solubility from 3sp. !(#ample 1/.6"-0+ solubility solubility e$uilibria 3(4+ solubility product constant


2. What is the solubility !in g9B" of sil8er!I" bromide at 2>C% -he solubility product constant

for sil8er!I" bromide is >.D 1D17at 2>C.

A" .6 1D7g9B

&" .6 1D11g9B

C" 1.7

1D

6

g9B'" 6./ 1D11g9B

(" /. 1D2g9B

A)*+ C -*+ 1 'IF+ easy (F+ 1/.1




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7D. anH the following metal sulfides in order of increasing molar solubility in water.

*alt KspCo* 6 1D21

Cu* ? 1D7?

Fe* ? 1D1

:g* 1.? 1D>2

5n* 2.> 1D1D

A" 5n* Fe* Co* Cu* :g*

&" Fe* :g* Co* Cu* 5n*C" :g* Cu* Co* Fe* 5n*

'" Cu* Co* Fe* 5n* :g*

(" Co* Cu* Fe* :g* 5n*

A)*+ C -*+ 1 'IF+ easy (F+ 1/.1

0&+ Calculate the solubility from 3sp. !(#ample 1/.6"-0+ solubility solubility e$uilibria


71. What is the molar solubility of sil8er!I" bromide at 2>C% -he solubility product constant

for sil8er!I" bromide is >.D 1D17at 2>C.

A" /.1 1D/M

&" 2.> 1D17M

C" 6.2 1D6M

'" >.D 1D>M

(" >.D 1D17M

A)*+ A -*+ 1 'IF+ easy (F+ 1/.1



72. What is the molar solubility of calcium sulfate at 2>C% -he solubility product constant for

calcium sulfate is 2.6 1D>at 2>C.

A" 2.6 1D>M

&" 7.> 1D2M

C" 1.2 1D>M

'" 1. 1D2M

(" 6.

1D7

M

A)*+ ( -*+ 1 'IF+ easy (F+ 1/.10&+ Calculate the solubility from 3sp. !(#ample 1/.6"




11/36

77. What is the molar solubility of barium fluoride at 2>C% -he solubility product constant for

barium fluoride is 1.D 1D?at 2>C.

A" ?.7 1D7M

&" 1.D 1D?M

C" >.D 1D/M

'" 1.D 1D7M

(" 1.? 1D2M

A)*+ A -*+ 1 'IF+ easy (F+ 1/.1



76. What is the molar solubility of aluminum hydro#ide at 2>C% -he solubility product

constant for aluminum hydro#ide is 6.? 1D77at 2>C.

A" 2.7 1D77M

&" ?. 1D1/M

C" 6.? 1D77M

'" 7.? 1DM(" 1.D 1D11M

A)*+ ' -*+ 1 'IF+ easy (F+ 1/.1



7>. What is the solubility !in g9B" of barium chromate at 2>C% -he solubility product constant

for barium chromate is 1.2 1D1Dat 2>C.

A" D.62 g9B

&" 7.D 1D

g9BC" 1.> 1Dg9B

'" D.D/ g9B

(" D.DD2 g9B

A)*+ ( -*+ 1 'IF+ easy (F+ 1/.1



7?. What is the solubility !in g9B" of calcium fluoride at 2>C% -he solubility product constant

for calcium fluoride is 7.6

1D11

at 2>C.A" D.DDD6? g9B&" 2./ 1Dg9B

C" D.D1? g9B

'" 1.7 1Dg9B

(" D.D6 g9B

A)*+ C -*+ 1 'IF+ easy (F+ 1/.1


12/36



7/. ure water is saturated with slightly soluble calcium fluoride, CaF2. Which of the followingis true concerning the e$uilibrium concentration of Ca2"

&" Fe!0:"2!Ksp= 1D1?"

C" bI2!Ksp= ?.> 1D"

'" *rC07!Ksp= .7 1D1D"

(" Ag&r !Ksp= >.D 1D17"

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.1



7. Which of the following salts has the highest molar solubility in water%

A" CaC07!Ksp= 7. 1D"

&" )i!0:"2!Ksp= 2.D 1D1>"

C" Fe!0:"2!Ksp= 1D1?"

'" Ag&r !Ksp= >.D 1D17"

(" bI2!Ksp= ?.> 1D"

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.10&+ Calculate the solubility from 3sp. !(#ample 1/.6"

-0+ solubility solubility e$uilibria 3(4+ precipitation calculations5*C+ general chemistry

6D. Which salt has the highest molar solubility in pure water%

*alt KspCd!0:"2 >.7 1D1>


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Fe!0:"2 .D 1D1?

bCr06 1. 1D16

CdC07 ?.2 1D12

5n!0:"2 2.D 1D17

A" CdC07&" Cd!0:"2

C" 5n!0:"2'" bCr06(" Fe!0:"2

A)*+ C -*+ 1 'IF+ moderate (F+ 1/.1



61. Which salt has the lowest molar solubility in pure water%

*alt Ksp

Cd!0:"2 >.7

1D

1>

Fe!0:"2 .D 1D1?

bCr06 1. 1D16

CdC07 ?.2 1D12

5n!0:"2 2.D 1D17

A" bCr06&" Fe!0:"2C" CdC07'" Cd!0:"2(" 5n!0:"2

A)*+ A -*+ 1 'IF+ moderate (F+ 1/.1



62. What is the hydro#ideGion concentration of a saturated solution of )i!0:"2% For )i!0:"2,

Ksp= 2.D 1D1>.

A" 2. 1D7M

&" /. 1D?M

C" 1.D 1D/M

'" 2./ 1D2M

(" 1.? 1D>M

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.1




14/36

67. What is the p: of a saturated solution of )i!0:"2% For )i!0:"2,Ksp= 2.D 1D1>.

A" 6.D&" .D

C" >.1D

'" .2D(" /.DD

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.1



66. anH the following salts in order of increasing molar solubility.

*alt KspAg*C) 1.D 1D12

Ag2Cr06 1.1 1D12

Ag706 1.D 1D1?

A" Ag*C) Ag2Cr06 Ag706&" Ag*C) Ag706 Ag2Cr06C" Ag706 Ag2Cr06 Ag*C)'" Ag706 Ag*C) Ag2Cr06(" Ag2Cr06 Ag*C) Ag706

A)*+ & -*+ 1 'IF+ moderate (F+ 1/.1



6>. -he insoluble salts AE, &2W, C2J7, '42, and (@7, which were formed from the metal ions

A


15/36

A)*+ & -*+ 1 'IF+ easy (F+ 1/.2

0&+ (#plain how the solubility of a salt is affected by another salt that has the samecation or anion !common ion". -0+ solubility solubility e$uilibria

3(4+ solubility and the commonGion effect


6/. In which of these solutions would sil8er!I" carbonate ha8e the lowest molar solubility% For

sil8er!I" carbonate,Ksp= .> 1D12.

A" D.D7M:2C07&" D.1MAg)07C" D.D1MAg)07'" D.1M)a2C07(" pure water

A)*+ & -*+ 1 'IF+ easy (F+ 1/.20&+ (#plain how the solubility of a salt is affected by another salt that has the same

cation or anion !common ion". -0+ solubility solubility e$uilibria

3(4+ solubility and the commonGion effect5*C+ general chemistry

6. -he figure below represents the result of adding which of the following a$ueous solutions to

a filtered, saturated solution of AgCl%

A" only )aCl!aq"&" only :)07!aq"C" :Cl!aq" or )aCl!aq"

'" only :Cl!aq"

(" :Cl!aq" or :)07!aq"

A)*+ C -*+ 1 'IF+ easy (F+ 1/.2

0&+ (#plain how the solubility of a salt is affected by another salt that has the samecation or anion !common ion". -0+ solubility solubility e$uilibria

3(4+ solubility and the commonGion effect


6. What is the concentration of sil8er!I" ion in a saturated solution of sil8er!I" carbonate

containing D.DD7DM)a2C07% For Ag2C07,Ksp= .? 1D12.

A" ?.D 1D6M

&" 2.D 1DM

C" .D 1DM

'" >.6 1D>M


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(" .D 1D6M

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.2

0&+ Calculate the solubility of a slightly soluble salt in a solution of a common ion.

!(#ample 1/.>" -0+ solubility solubility e$uilibria3(4+ solubility and the commonGion effect


>D. What is the molar solubility of 5gF2in a D.6DM5g!)07"2solution% For 5gF2,Ksp= .6 1D

.

A" .D 1DM

&" 2.7 1D6M

C" 2.D 1DGM

'" 6.? 1D6M

(" 7.2 1D7M

A)*+ & -*+ 1 'IF+ moderate (F+ 1/.2

0&+ Calculate the solubility of a slightly soluble salt in a solution of a common ion.!(#ample 1/.>" -0+ solubility solubility e$uilibria


>1. What is the molar solubility of 5gF2 in a D.6>M)aF solution% For 5gF2,Ksp= .6 1D.

A" 1.D 1D/M

&" 1.6 1D6M

C" 1. 1D/M

'" /.1 1D6M

(" 6.1 1D/M

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.20&+ Calculate the solubility of a slightly soluble salt in a solution of a common ion.

!(#ample 1/.>" -0+ solubility solubility e$uilibria


>2. Kspfor bF2is 6.D 1D. If a D.D76M)aF solution is saturated with bF2, what is ;b

2


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>7. -he solubility of Ba!I07"7in a D.?2M3I07solution is 1.D 1D/mol9B. CalculateKspfor

Ba!I07"7.

A" ?.2 1D

&" 2.6 1D22

C" 2.6 1D1

'" 2.6 1D

(" none of these

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.20&+ Calculate the solubility of a slightly soluble salt in a solution of a common ion.

!(#ample 1/.>" -0+ solubility solubility e$uilibria


>6. Which of the following, when added to a saturated solution of AgCl, will cause a decrease in

the molar concentration of Ag


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A" both I and II

&" only I

C" only II

'" only III(" only IE

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.70&+ *tate the criterion for precipitation.

-0+ solubility solubility e$uilibria 3(4+ precipitation calculations


>/. Which Figures IIE represent!s" the result of mi#ing a$ueous solutions of )a0: and CuCl2

in which the ion product QcKKspfor the insoluble product% !C = cation, A = anion"

A" only II

&" both I and II

C" only IE'" only I

(" only III

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.70&+ *tate the criterion for precipitation.

-0+ solubility solubility e$uilibria 3(4+ precipitation calculations


>. For which of the following will precipitation be e#pected%

A" QcKsp&" Qc= 1

C" Qc=Ksp'" QcKKsp(" Ksp= 1


19/36

A)*+ ' -*+ 1 'IF+ easy (F+ 1/.7

0&+ *tate the criterion for precipitation.-0+ solubility solubility e$uilibria

3(4+ precipitation calculations criterion for precipitation 5*C+ general chemistry

>. Which of the following will apply to a saturated solution of an ionic compound%

A" QcKsp&" QcKKsp

C" Qc=Ksp'" Ksp= 1

(" Qc= 1

A)*+ C -*+ 1 'IF+ easy (F+ 1/.7

0&+ *tate the criterion for precipitation.

-0+ solubility solubility e$uilibria3(4+ precipitation calculations criterion for precipitation 5*C+ general chemistry

?D. *uppose >D.DD mB of 2.D 1D?MFe!)07"7is added to >D.DD mB of 2.D 1D6M3I07.

Which of the following statements is true% For Fe!I07"7,Ksp= 1.D 1D16.

A" A precipitate forms because QcKKsp.&" A precipitate forms because QcKsp.

C" )o precipitate forms because QcKsp.'" )o precipitate forms because Qc=Ksp.

(" )o precipitate forms because QcKKsp.

A)*+ C -*+ 1 'IF+ easy (F+ 1/.70&+ redict whether precipitation will occur !gi8en ion concentrations". !(#ample 1/.?"



?1. -o 1.D B of water, 7.D 1D?mol of b!)07"2, 6.D 1D?mol of 32Cr06, and 1.D mol of

)aCl are added. What will happen%

*alt Ksp

bCr06 1. 1D16

bCl2 1.? 1D>

A" A precipitate of 3Cl will form.

&" A precipitate of bCr06will form.C" A precipitate of bCl2will form.

'" )o precipitate will form.

(" &oth a precipitate of bCl2and a precipitate of bCr06will form.A)*+ & -*+ 1 'IF+ easy (F+ 1/.7

0&+ redict whether precipitation will occur !gi8en ion concentrations". !(#ample 1/.?"-0+ solubility solubility e$uilibria



20/36

?2. What is the ma#imum *r2

M

sulfideGion concentration without precipitating strontium sulfate% For *r*06,Ksp= 2.> 1D

/.

A" 1.? 1D1D

M

&" 1.? 1D11

MC" 6.D 1D

7M

'" ?.7 1D>

M(" 2.> 1D2M

A)*+ C -*+ 1 'IF+ easy (F+ 1/.7

0&+ redict whether precipitation will occur !gi8en ion concentrations". !(#ample 1/.?"

-0+ solubility solubility e$uilibria3(4+ precipitation calculations criterion for precipitation 5*C+ general chemistry

?7. What will happen if D.1 mol of solid sil8er!I" nitrate is added to 1.D B of a saturated solution

of sil8er!I" chromate% For Ag2Cr06,Ksp= 2.6 1D12.

A" -he Ag)07will settle to the bottom without dissol8ing.

&" -he concentration of Cr062will increase.

C" *ome Ag2Cr06will precipitate.'" )othing will happen.

(" -he concentration of Ag. What is the minimum concentration of Cu2

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.70&+ redict whether precipitation will occur !gi8en ion concentrations". !(#ample 1/.?"



?/. If >DD mB of 1.6 1D?MAg)07is mi#ed with >DD mB of 1.6 1D?M)a&r, what will

occur% For Ag&r,Ksp= > 1D17.

A" *il8er!I" bromide will precipitate.

&" -he concentration of AgD.DD mB of a

1 1D?solution of sodium phosphate. Which of the following statements is true% For

lead!II" phosphate,Ksp= 1 1D66.

A" A precipitate forms because QcKsp.

&" )o precipitate forms because QcKKsp.

C" A precipitate forms because QcKKsp.'" )o precipitate forms because Qc=Ksp.

(" )o precipitate forms because QcKsp.

A)*+ C -*+ 1 'IF+ easy (F+ 1/.7

0&+ redict whether precipitation will occur !gi8en solution 8olumes and

concentrations". !(#ample 1/./" -0+ solubility solubility e$uilibria3(4+ precipitation calculations criterion for precipitation 5*C+ general chemistry

?. If 2/D mB of 1 1D/MAg)07is mi#ed with 2/D mB of 1 1DM)aI, what will occur%

For AgI,Ksp= .7 1D1/.

A" *odium nitrate will precipitate.


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&" *il8er!I" nitrate will precipitate.

C" *odium iodide will precipitate.'" *il8er!I" iodide will precipitate.

(" )o precipitate will form.

A)*+ ' -*+ 1 'IF+ easy (F+ 1/.7


concentrations". !(#ample 1/./" -0+ solubility solubility e$uilibria


/D. If 71> mB of 1 1D6MCa!)07"2is mi#ed with 71> mB of 1 1D6M)aF, what will

occur% For CaF2,Ksp= 7.6 1D11.

A" )o precipitate will form.&" *odium nitrate will precipitate.

C" Calcium nitrate will precipitate.

'" Calcium fluoride will precipitate.(" *odium fluoride will precipitate.

A)*+ A -*+ 1 'IF+ moderate (F+ 1/.70&+ redict whether precipitation will occur !gi8en solution 8olumes and



/1. If 2/D mB of 1 1DMAl!)07"7is mi#ed with 2/D mB of 1 1DM)a0:, what will

occur% For Al!0:"7,Ksp= 6.? 1D77.

A" Aluminum hydro#ide will precipitate.

&" *odium hydro#ide will precipitate.C" Aluminum nitrate will precipitate.

'" *odium nitrate will precipitate.

(" )o precipitate will form.

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.70&+ redict whether precipitation will occur !gi8en solution 8olumes andconcentrations". !(#ample 1/./" -0+ solubility solubility e$uilibria


/2. What is the minimum mass of )a2C07that must be added to 26.? mB of a .> 1D

6MAg)07solution in order for precipitation to occur% For Ag2C07,Ksp= .? 1D12.

A" 2.> 1D7g

&" 7.1 1D6g

C" 1.2 1D7g

'" 2.6 1D

g(" 2.> 1D>g

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.7

0&+ redict whether precipitation will occur !gi8en solution 8olumes andconcentrations". !(#ample 1/./" -0+ solubility solubility e$uilibria



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/7. What is the ma#imum 8olume of 6. 1D>M32Cr06that, added to 1/.D mB of a solution

that is .? 1D>M&a!)07"2and >.6 1D?Mb!)07"2, will precipitate bCr06but not

&aCr06% For bCr06,Ksp= 1. 1D16, and for &aCr06,Ksp= 1.2 1D

1D.

A" 1/ mB

&" D.>1 mB

C" D.6 mB'" D.DD12 mB

(" /./ mB

A)*+ & -*+ 1 'IF+ difficult (F+ 1/.7



3(4+ precipitation calculations fractional precipitation 5*C+ general chemistry

/6. A solution is D.D1DM in each of b!)07"2, 5n!)07"2, and @n!)07"2. *olid )a0: is added

until the p: of the solution is .>D. Which of the following statements is true%

*alt Kspb!0:"2 1.6 1D2D

5n!0:"2 2.D

1D

17

@n!0:"2 2.1 1D1?

A" 0nly 5n!0:"2will precipitate.&" All three hydro#ides will precipitate.

C" 0nly b!0:"2will precipitate.

'" )o precipitate will form.(" 0nly @n!0:"2and b!0:"2will precipitate.

A)*+ ( -*+ 1 'IF+ moderate (F+ 1/.70&+ (#plain how two ions can be separated using fractional precipitation.



/>. What is the ma#imum concentration of carbonate ions that will precipitate &aC07but not

5gC07from a solution that is 2./ 1D7

Meach in 5g2


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/?. Which of the following solutions should be added to a solution containing both copper!II"

ions and sil8er!I" ions in order to precipitate only one of the ions%A" :Cl!aq"

&" :2*!aq"

C" :)07!aq"'" :2*!aq" < :Cl!aq"

(" :2*!aq" < :)07!aq"

A)*+ A -*+ 1 'IF+ easy (F+ 1/.70&+ (#plain how two ions can be separated using fractional precipitation.



//. For which pair of cations would the addition of dilute hydrobromic acid precipitate one but

not the other%A" Ag


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0&+ (#plain how two ions can be separated using fractional precipitation.


D. *il8er nitrate !Ag)07" is slowly added to a solution containing D.1DD 5 &rand D.D>D 5

FeC)?6until a precipitate Lust forms. What is the molar concentration of Ag.D 1DG17and Ag6FeC)?Ksp= .> 1D

G6>.

A" 2.D 1DG11M Ag.D g&" 7.7 g

C" 2.? g

'" D.D g(" 1./ g

A)*+ ( -*+ 1 'IF+ difficult (F+ 1/.7

0&+ (#plain how two ions can be separated using fractional precipitation.-0+ solubility solubility e$uilibria


2. -he best e#planation for the dissolution of @n* in dilute :Cl is that

A" the Minc ion is amphoteric.

&" the sulfide ion concentration is decreased by the formation of :2*.C" the solubility product of @nCl2is less than that of @n*.

'" the Minc ion concentration is decreased by the formation of a chloro comple#.

(" the sulfide ion concentration is decreased by o#idation to sulfur.

A)*+ & -*+ 1 'IF+ easy (F+ 1/.6

0&+ (#plain the $ualitati8e effect of p: on solubility of a slightly soluble salt.-0+ solubility solubility e$uilibria

3(4+ effect of p: on solubility $ualitati8e effect of p: 5*C+ general chemistry

7. 4ou ha8e two salts, AgJ and Ag4, with 8ery similarKsp8alues. 4ou Hnow thatKafor :J ismuch greater thanKafor :4. Which statement will be true%

A" AgJ and Ag4 are less soluble in acidic solution than in pure water.

&" AgJ is more soluble in acidic solution.


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C" AgJ and Ag4 are e$ually soluble in acidic solution.

'" Ag4 is more soluble in acidic solution.(" none of these

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.60&+ (#plain the $ualitati8e effect of p: on solubility of a slightly soluble salt.



6. For which of the following salts would the addition of nitric acid increase its solubility%

A" AgI

&" Ag)07C" AgCl

'" Ag2*06(" Ag&r

A)*+ ' -*+ 1 'IF+ easy (F+ 1/.6

0&+ 'etermine the $ualitati8e effect of p: on solubility. !(#ample 1/."-0+ solubility solubility e$uilibria


>. Which of the following substances will increase the molar solubility of nicHel!II" phosphate

in a saturated solution%

A" AgCl

&" :)07C" 30:

'" Al06(" )a706

A)*+ & -*+ 1 'IF+ easy (F+ 1/.6

0&+ 'etermine the $ualitati8e effect of p: on solubility. !(#ample 1/."

-0+ solubility solubility e$uilibria3(4+ effect of p: on solubility $ualitati8e effect of p: 5*C+ general chemistry

?. In which of the following solutions would CaC206ha8e the highest molar solubility%A" D.D1M)a2C206&" D.D1M)aCl

C" D.D1M:Cl'" D.D1MCa!)07"2(" D.D1M)a:C206

A)*+ C -*+ 1 'IF+ easy (F+ 1/.6

0&+ 'etermine the $ualitati8e effect of p: on solubility. !(#ample 1/."

-0+ solubility solubility e$uilibria3(4+ effect of p: on solubility $ualitati8e effect of p: 5*C+ general chemistry

/. -he figure below represents the results of adding a strong acid to a saturated solution of an

ionic compound. Which of the following could be the ionic compound%


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A" AgCl06&" AgF

C" AgI

'" AgCl(" Ag&r

A)*+ & -*+ 1 'IF+ easy (F+ 1/.60&+ 'etermine the $ualitati8e effect of p: on solubility. !(#ample 1/."



. What is the best way to ensure complete precipitation of *n* from a saturated :2* solution%

A" Add a strong acid.

&" Add a weaH acid.C" Add a strong base.

'" Add a weaH base.

(" Add more :2*.

A)*+ C -*+ 1 'IF+ moderate (F+ 1/.6

0&+ (#plain the basis for the sulfide scheme to separate a mi#ture of metal ions.-0+ solubility applications of solubility e$uilibria 5*C+ general chemistry

. *uppose hydrogen sulfide is added to a solution that is D.1DMin Cu2*alt Ksp

Cu* ?.D 1D7?

b* 2.> 1D2/

)i* 7.D 1D1

A" Cu* only

&" b* and )i*C" Cu* and b*

'" )i* only

(" Cu*, b*, and )i*

A)*+ C -*+ 1 'IF+ difficult (F+ 1/.6


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0&+ (#plain the basis for the sulfide scheme to separate a mi#ture of metal ions.

-0+ solubility solubility e$uilibria 3(4+ effect of p: on solubility5*C+ general chemistry

D. *uppose hydrogen sulfide is added to a solution that is D.DD1DMin Fe20&+ 'efine formation constant or stability constant, 3f, and dissociation constant, 3d.

-0+ solubility comple# ion e$uilibria 3(4+ comple# ion formation


2. Which of the following is not liHely to form a comple# ion with Al7


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-0+ solubility comple# ion e$uilibria

7. Which of the following statements concerning amphoteric hydro#ides is9are correct%

1. -he amphoteric hydro#ide of aluminum!III" is commercially used to separatealuminum!III" o#ide from impurities in the aluminum ore bau#ite.

2. Amphoteric hydro#ides form soluble comple# ions at high p:Os.

7. -he amphoteric hydro#ide, @n!0:"2, can be precipitated by increasing the p:

of a solution containing @n2

2.

A" 1 only&" 2 only

C" 7 only

'" 1 and 2(" 1, 2, and 7

A)*+ ( -*+ 1 'IF+ easy (F+ 1/.>

0&+ 'efine formation constant or stability constant, 3f, and dissociation constant, 3d.

-0+ solubility comple# ion e$uilibria

6. Calculate the molar concentration of uncomple#ed @n2

2

0&+ Calculate the concentration of a metal ion in e$uilibrium with a comple# ion.!(#ample 1/." -0+ solubility comple# ion e$uilibria

>. Cyanide ion forms 8ery stable comple# ions with a 8ariety of metal ions. What is the molare$uilibrium concentration of uncomple#ed Cu2

M

&" 7.? 1D?

M

C" 6.6 1D>

M'" 7.6 1D

M

(" 1.2 1D1/

M

A)*+ A -*+ 1 'IF+ easy (F+ 1/.>0&+ Calculate the concentration of a metal ion in e$uilibrium with a comple# ion.

!(#ample 1/." -0+ solubility comple# ion e$uilibria


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?. What is the molar e$uilibrium concentration of uncomple#ed Ag

M

&" >.2 1D11

MC" .D 1D

M

'" 2.6 1D1D

M(" 1.1 1D>

M

A)*+ A -*+ 1 'IF+ easy (F+ 1/.>

0&+ Calculate the concentration of a metal ion in e$uilibrium with a comple# ion.

!(#ample 1/." -0+ solubility comple# ion e$uilibria

/. An a$ueous solution of Ag!C)"2 is made by combining D.D1DD moles Ag)07with 1.DD

mole )aC) and diluting to 1.DDD B. What is the molar concentration of Ag

1

A" 1. 1DG21

M

&" >.7 1D2DM

C" >. 1D1?M

'" 1./ 1DG1/M

(" D.D1DM

A)*+ A -*+ 1 'IF+ moderate (F+ 1/.>

0&+ Calculate the concentration of a metal ion in e$uilibrium with a comple# ion.

!(#ample 1/." -0+ solubility comple# ion e$uilibria3(4+ comple# ion formation e$uilibrium calculations with 3f 5*C+ general chemistry

. *uppose sodium hydro#ide is added to a D.DD1?Msolution of Minc nitrate such that the p:

of the solution is 17.62. What is the e$uilibrium concentration of @n21>

A" 2.2 1D1M

&" 1.? 1D7M

C" ?.? 1D2M

'" 1.2 1D1?M

(" 2.2 1D1M

A)*+ ' -*+ 1 'IF+ moderate (F+ 1/.>

0&+ Calculate the concentration of a metal ion in e$uilibrium with a comple# ion.!(#ample 1/." -0+ solubility comple# ion e$uilibria

3(4+ comple# ion formation e$uilibrium calculations with 3f 5*C+ general chemistry

. What is the concentration of Cd2


31/36


32/36

'" AgCl

(" *rC07

A)*+ ' -*+ 1 'IF+ easy (F+ 1/.?

0&+ redict whether a precipitate will form in the presence of the comple# ion. !(#ample1/.1D" -0+ solubility comple# ion e$uilibria

3(4+ comple# ions and solubility 5*C+ general chemistry

1D7. What will happen if >D.D mB of D.D22M)a2*207, >D.D mB of D.D1DMAg)07, and >D.D mBof D.D/M3Cl are mi#ed together% For AgCl,Ksp= 1. 1D

1DN for Ag!*207"27,

Kf= 2. 1D17.

A" A precipitate of Ag2*207will form.

&" A precipitate of 3)07will form.C" )o precipitate will form because sil8er!I" ion e#ists predominantly as Ag. 1D

A)*+ A -*+ 1 'IF+ easy (F+ 1/.?0&+ Calculate the solubility of a slightly soluble ionic compound in a solution of the

comple# ion. !(#ample 1/.11" -0+ solubility comple# ion e$uilibria

1D>. Pi8en the following e$uilibrium constants,

AgI07 Ksp = 7.1 1D

Ag!):7"2


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AgI07!s" < 2):7!aq" Ag!):7"2

C" >.> 1D16

'" 1.

(" 1./ 1D/

A)*+ A -*+ 1 'IF+ easy (F+ 1/.?

0&+ Calculate the solubility of a slightly soluble ionic compound in a solution of thecomple# ion. !(#ample 1/.11" -0+ solubility comple# ion e$uilibria

1D?. What is the molar solubility of nicHel!II" sulfide in D.D>7M3C)% For )i*,Ksp= 7.D 1D

1N for )i!C)"62,Kf= 1.D 1D

71.

A" >.> 1D1DM

&" >.7 1D2M

C" 1.> 1D1M

'" 1.7 1D2M

(" 2.2 1D>M

A)*+ ' -*+ 1 'IF+ difficult (F+ 1/.?

0&+ Calculate the solubility of a slightly soluble ionic compound in a solution of the

comple# ion. !(#ample 1/.11" -0+ solubility comple# ion e$uilibria

3(4+ comple# ion formation e$uilibrium calculations with 3f 5*C+ general chemistry

1D/. What is the molar solubility of Minc hydro#ide at p: 12.6D% For @n!0:"2,Ksp= 2.1 1D1?N

for @n!0:"62,Kf= 2. 1D

1>.

A" .6 1D2?M

&" 1.> 1D2M

C" 7./ 1D6M

'" 7./ 1D?M

(" 1.6 1DM

A)*+ C -*+ 1 'IF+ difficult (F+ 1/.?

0&+ Calculate the solubility of a slightly soluble ionic compound in a solution of the

comple# ion. !(#ample 1/.11" -0+ solubility comple# ion e$uilibria3(4+ comple# ion formation e$uilibrium calculations with 3f 5*C+ general chemistry

1D. Which of the following statements concerning the separation of metal ions into AnalyticalProups IGE is9are correct%

1. 0nly the least soluble sulfides will precipitate in an acidic solution of :2*.2. 3


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C" 7 only

'" 1 and 2(" 1, 2, and 7

A)*+ A -*+ 1 'IF+ easy (F+ 1/./0&+ 'escribe the main outline of the sulfide scheme for $ualitati8e analysis.

-0+ solubility applications of solubility e$uilibria

1D. Which of the following statements concerning the separation of metal ions into AnalyticalProups IGE is9are correct%

1. -he substitution of dilute @n!Cl"2for dilute :Cl in step one, the precipitation ofthe Analytical Proup I metal ions as chloride salts, will ha8e no effect on the

rest of the analysis.

2. Proup I ions cannot be precipitated using this scheme.7. In the filtration stages, the filtrate is the solid material that is remo8ed from the

mi#ture by filtration.

A" 1 only

&" 2 only

C" 7 only'" 1 and 2

(" 1, 2, and 7

A)*+ & -*+ 1 'IF+ easy (F+ 1/./

0&+ 'escribe the main outline of the sulfide scheme for $ualitati8e analysis.


11D. In the $ualitati8e analysis scheme for metal ions, how are the Analytical Proup III cations

separated from the cations of Analytical Proups IE and E%

A" by addition of :2* in acidic solution, forming insoluble metal sulfides

&" by addition of !):6"2C07or !):6"706, forming insoluble metal carbonates orphosphates

C" by addition of :2*06, forming insoluble metal sulfates'" by addition of :Cl, forming insoluble metal chlorides

(" by addition of :2* in basic solution, forming insoluble metal sulfides or hydro#ides

A)*+ ( -*+ 1 'IF+ easy (F+ 1/./0&+ 'escribe the main outline of the sulfide scheme for $ualitati8e analysis.


3(4+ $ualitati8e analysis of metal ions 5*C+ general chemistry

111. What is the effect of substituting soluble metal salts such as )aCl and 32C07for :Cl or

!):6"2C07in the $ualitati8e analysis scheme for separating the fi8e Analytical Proups%A" 4ou can no longer tell if your original sample contained )a


35/36

A)*+ A -*+ 1 'IF+ easy (F+ 1/./

0&+ 'escribe the main outline of the sulfide scheme for $ualitati8e analysis.-0+ solubility applications of solubility e$uilibria

112. In the sulfide scheme for $ualitati8e analysis, the cations of Analytical Proup IE areprecipitated as phosphates or carbonates. Analytical Proup IE consists of

A" alHaline earth elements.

&" the halogens.

C" alHali metals.'" transition metals ha8ing

A)*+ & -*+ 1 'IF+ easy (F+ 1/./0&+ 'escribe the main outline of the sulfide scheme for $ualitati8e analysis.



11>. -he following reaction represents a step in the separation of which analytical group of

cations%

Cu2


36/36

A"Analytical Proup I

&" Analytical Proup III

C" Analytical Proup E'" Analytical Proup IE

(" Analytical Proup II

A)*+ ( -*+ 1 'IF+ easy (F+ 1/./

0&+ 'escribe the main outline of the sulfide scheme for $ualitati8e analysis.



Chemistry Ch. 17 Test Bank

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Transcript of Chemistry Ch. 17 Test Bank