Final Exam Review Units 8-10
description
Transcript of Final Exam Review Units 8-10
![Page 1: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/1.jpg)
Final Exam ReviewUnits 8-1045 Questions in 80 minutes 1:45 per question15 Questions = 33 points26:33 timer
![Page 2: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/2.jpg)
Station 1 (Heat Unit 8)•Which of the following is an endothermic
phase change?
a) Sublimationb) Freezingc) Condensationd) None of these
![Page 3: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/3.jpg)
Station 1 (Heat Unit 8)•Which of the following is an endothermic
phase change?
a) Sublimationb) Freezingc) Condensationd) None of these
![Page 4: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/4.jpg)
Station 2 (Heat Unit 8)•How much heat does a 3.0 gram ice cube
absorb as its temperature increases from -7.4C to 5.0C?
a) 46.62 Jb) 1001 Jc) 1110.42 Jd) 155.5 J
![Page 5: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/5.jpg)
Station 2 (Heat Unit 8)•How much heat does a 3.0 gram ice cube
absorb as its temperature increases from -7.4C to 5.0C?
a) 46.62 Jb) 1001 Jc) 1110.42 Jd) 155.5 J
![Page 6: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/6.jpg)
Station 3 (Heat Unit 8)•How much heat is released when 4.1
grams of water is frozen?
a) 1.4 kJb) 25 kJc) 170 kJd) 9.3 kJ
![Page 7: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/7.jpg)
Station 3 (Heat Unit 8)•How much heat is released when 4.1
grams of water is frozen?
a) 1.4 kJb) 25 kJc) 170 kJd) 9.3 kJ
![Page 8: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/8.jpg)
Station 4 (Heat Unit 8)•Classify the condensation of steam as a
chemical change or a physical change.
a) Chemical changeb) Physical change
![Page 9: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/9.jpg)
Station 4 (Heat Unit 8)•Classify the condensation of steam as a
chemical change or a physical change.
a) Chemical changeb) Physical change
![Page 10: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/10.jpg)
Station 5 (Heat Unit 8) •If 3.0g of water at 35C is mixed with 8g
of ethanol at 9C, what is the final temp of the mixture?
a) 19.2Cb) 39.4Cc) 10.4Cd) 42.0Ce) None of these
![Page 11: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/11.jpg)
Station 5 (Heat Unit 8) •If 3.0g of water at 35C is mixed with 8g
of ethanol at 9C, what is the final temp of the mixture?
a) 19.2Cb) 39.4Cc) 10.4Cd) 42.0Ce) None of these
![Page 12: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/12.jpg)
Station 6 (Solutions Unit 9)•Which of the following would NOT
increase the rate of solvation?
a) Increase surface areab) Agitate the mixture by stirringc) Increase the temperature of the solventd) All of these will increase the rate.e) A and B
![Page 13: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/13.jpg)
Station 6 (Solutions Unit 9)•Which of the following would NOT
increase the rate of solvation?
a) Increase surface areab) Agitate the mixture by stirringc) Increase the temperature of the solventd) All of these will increase the rate.e) A and B
![Page 14: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/14.jpg)
Station 7 (Solutions Unit 9)•Use the solubility graph on your reference
sheet. If 70 grams of O2 is dissolved in water at room temperature (24C), will the solution be saturated, supersaturated, or unsaturated?a) Saturatedb) Supersaturatedc) Unsaturatedd) Cannot tell based on the information
given.
![Page 15: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/15.jpg)
Station 7 (Solutions Unit 9)•Use the solubility graph on your reference
sheet. If 70 grams of O2 is dissolved in water at room temperature (24C), will the solution be saturated, supersaturated, or unsaturated?a) Saturatedb) Supersaturatedc) Unsaturatedd) Cannot tell based on the information
given.
![Page 16: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/16.jpg)
Station 8 (Solutions Unit 9)•Which of the following aqueous solutions
will give the highest freezing point? a) 1m KIb) 1m CaF2
c) 1mAlPO4
d) 1m Mg3(PO4)2
e) All of these solutions will have the same freezing point.
![Page 17: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/17.jpg)
Station 8 (Solutions Unit 9)•Which of the following aqueous solutions
will give the highest freezing point? a) 1m KIb) 1m CaF2
c) 1mAlPO4
d) 1m Mg3(PO4)2
e) All of these solutions will have the same freezing point.
![Page 18: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/18.jpg)
Station 9 (Solutions Unit 9)•A solution is 14.2 M NaOH and is diluted.
What is the concentration if 10mL of the concentrated solution is diluted to 630mL?
a) 0.225 Mb) 14.4 Mc) 895 Md) 0.895 Me) 14.0 M
![Page 19: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/19.jpg)
Station 9 (Solutions Unit 9)•A solution is 14.2 M NaOH and is diluted.
What is the concentration if 10mL of the concentrated solution is diluted to 630mL?
a) 0.225 Mb) 14.4 Mc) 895 Md) 0.895 Me) 14.0 M
![Page 20: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/20.jpg)
Station 10 (Solutions Unit 9)•How many grams of lithium chloride
would you need to add to 25g water to make 0.80 molal solution?
a) 0.02 grams of LiClb) 0.2 grams of LiClc) 20 grams of LiCld) 0.848 grams of LiCle) 0.00048 grams of LiCl
![Page 21: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/21.jpg)
Station 10 (Solutions Unit 9)•How many grams of lithium chloride
would you need to add to 25g water to make 0.80 molal solution?
a) 0.02 grams of LiClb) 0.2 grams of LiClc) 20 grams of LiCld) 0.848 grams of LiCle) 0.00048 grams of LiCl
![Page 22: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/22.jpg)
Station 11 (Solutions Unit 9)•What is the volume of solution if the
molarity is 0.45M and 0.15 moles of solute are dissolved?
a) 0.33 L of solutionb) 0.33 mL of solutionc) 3.00 L of solutiond) 3.00 mL of solutione) None of these
![Page 23: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/23.jpg)
Station 11 (Solutions Unit 9)•What is the volume of solution if the
molarity is 0.45M and 0.15 moles of solute are dissolved?
a) 0.33 L of solutionb) 0.33 mL of solutionc) 3.00 L of solutiond) 3.00 mL of solutione) None of these
![Page 24: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/24.jpg)
Station 12 (Acid/Base Unit 10)•According to the Arrhenius theory a
substance that releases a hydrogen ion is classified as a(n)
a) Acidb) Basec) Conjugate Acidd) Conjugate Basee) None of these
![Page 25: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/25.jpg)
Station 12 (Acid/Base Unit 10)•According to the Arrhenius theory a
substance that releases a hydrogen ion is classified as a(n)
a) Acidb) Basec) Conjugate Acidd) Conjugate Basee) None of these
![Page 26: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/26.jpg)
Station 13 (Acid/Base Unit 10)•Consider the reaction:
NH3(aq) + H2O(l) NH4+(aq) + OH-(aq)
What species is the conjugate acid?a) NH3
b) H2Oc) NH4
+
d) OH-
e) None of these
![Page 27: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/27.jpg)
Station 13 (Acid/Base Unit 10)•Consider the reaction:
NH3(aq) + H2O(l) NH4+(aq) + OH-(aq)
What species is the conjugate acid?a) NH3
b) H2Oc) NH4
+
d) OH-
e) None of these
![Page 28: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/28.jpg)
Station 14 (Acid/Base Unit 10)•Calculate the [H+] in a solution that has a
pOH of 13.4.
a) 3.98x10-14 Mb) 2.51x10-1 Mc) 3.98 Md) 2.51x1013 Me) None of these
![Page 29: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/29.jpg)
Station 14 (Acid/Base Unit 10)•Calculate the [H+] in a solution that has a
pOH of 13.4.
a) 3.98x10-14 Mb) 2.51x10-1 Mc) 3.98 Md) 2.51x1013 Me) None of these
![Page 30: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/30.jpg)
Station 15 (Acid/Base Unit 10)•A solution with a hydrogen ion
concentration of 4.6x10-8 M has a pH between
a) 6.67b) 7.34c) -7.34d) 13.3e) None of these
![Page 31: Final Exam Review Units 8-10](https://reader036.fdocuments.us/reader036/viewer/2022081422/568162af550346895dd334da/html5/thumbnails/31.jpg)
Station 15 (Acid/Base Unit 10)•A solution with a hydrogen ion
concentration of 4.6x10-8 M has a pH between
a) 6.67b) 7.34c) -7.34d) 13.3e) None of these