Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.
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Transcript of Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.
![Page 1: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/1.jpg)
Chemical Equations
![Page 2: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/2.jpg)
Chemical Equations
Like a recipe:
Reactants Products
2H2(g) + O2(g) 2H2O(l)
Introduction
![Page 3: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/3.jpg)
Symbols Yields or Produces(s) solid(l) liquid(aq) aqueous(g) gas
Introduction
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The Difference between (l) and (aq)
• Liquid – Pure liquid.Nothing is in it.
H2O(l)
• Aqueous – Dissolved in water.
NaCl(aq) = Salt water
(l) or (aq)?
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(l) or (aq)?
Distilled water
Tap Water
Iced Tea
Mouthwash
Gasoline
Paint
(l) or (aq)?
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Easy Examples:
Hd10 + Bu8 HdBu
Balancing
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Balancing
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Balancing
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Balancing
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Balancing
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1. Must balance because of the Law of Cons. of Matter
2. Rules:• Can only change the coefficient,
never the subscript• Coefficient multiplies every atom in a
formula
Balancing
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S + O2 SO
P2(g) + H2(g) PH3(g)
Balancing
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Al + Cl2 AlCl3
H2O + C H2 + CO
C3H8 + O2 CO2 + H2O
Balancing
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C2H6 + O2 CO2 + H2O
C4H10 + O2 CO2 + H2O
Na2SO4 + Fe(NO3)3 NaNO3 + Fe2(SO4)3
Balancing
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Fe(OH)3 + H2SO4 Fe2(SO4)3 + H2O
Sodium reacts with water to form sodium hydroxide and hydrogen gas
Balancing
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Magnesium hydroxide reacts with hydrochloric acid (HCl) to form magnesium chloride and water.
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Calcium reacts with water to form hydrogen and calcium hydroxide
Aluminum nitrate reacts with sodium hydroxide to form aluminum hydroxide and sodium nitrate
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Copper(II) chloride reacts with iron(III) sulfate to form copper(II)sulfate and iron(III) chloride
Phosphoric acid (H3PO4) reacts with calcium hydroxide to form water and calcium phosphate
Balancing
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Mg3(PO4)2 + Al2(SO4)3 MgSO4+ AlPO4
Fe2S3 + O2 Fe2O3 + SO2
Ru2O3 + CO Ru + CO2
NaBr + Al(NO3)3 NaNO3 + AlBr3
Ba + AlCl3 BaCl2 + Al
Propane (C3H8) is burned in oxygen to produce carbon dioxide and water
Iron(III)nitrate reacts with lithium carbonate to form iron(III)carbonate and lithium nitrate.
Sodium Chlorate decomposes to form sodium chloride and oxygen gas
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Mg3(PO4)2 + Al2(SO4)3 3MgSO4 + 2AlPO4
2Fe2S3 + 9O2 2Fe2O3 + 6SO2
Ru2O3 + 3CO 2Ru + 3CO2
3NaBr + Al(NO3)3 3NaNO3 + AlBr3
3Ba + 2AlCl3 3BaCl2 + 2Al
C3H8 + 5O2 3CO2 + 4H2O
2Fe(NO3)3 + 3Li2CO3 Fe2(CO3)3 + 6LiNO3
2NaClO3 2NaCl + 3O2
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Sulfur trioxide reacts with water to form sulfuric acid (H2SO4)
Boron sulfide, B2S3, reacts with water to form boric acid, H3BO3 and hydrogen sulfide, H2S.
Mercury(II)nitrate decomposes to form mercury(II) oxide, nitrogen dioxide, and oxygen
Hydrogen sulfide reacts with iron(III)hydroxide to form iron(III)sulfide and water.
![Page 23: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/23.jpg)
Mg3(PO4)2 + Al2(SO4)3 MgSO4+ AlPO4
Fe2S3 + O2 Fe2O3 + SO2
Ru2O3 + CO Ru + CO2
a. Propane (C3H8) is burned in oxygen to produce carbon dioxide and water
b.Iron(III)nitrate reacts with lithium carbonate to form iron(III)carbonate and lithium nitrate.
c. Sodium Chlorate decomposes to form sodium chloride and oxygen gas
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Chemical Equations
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Chemical Equations
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Chemical Equations
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Synthesis (Combination)
Decomposition
Combustion
Single Replacement
Double Replacement
Dissolving
Types of Reactions
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1. Synthesis
• Two or more elements or compounds combine to form a new compound
• Examples
Na(s) + Cl2(g) NaCl(s)
C(s) + O2(g) CO2(g)
CaO(s) + CO2(g) CaCO3(s)
Types of Reactions
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2. Decomposition• Opposite of synthesis• One compound breaks down, usually
requires heat energy
Types of Reactions
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Dima, a 40,000 year old frozen mammoth (Alaska)
![Page 31: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/31.jpg)
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• Examples:
HgO(s) Hg(l) + O2(g)
CaCO3(s) CaO(s) + CO2(g)
KClO3(s) KCl(s) + O2(g)
Types of Reactions
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Duke: In loving memory.
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3. Combustion• Fast reaction with O2 (Burning)• Hydrocarbons burn to form CO2
and H2O
Types of Reactions
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• Examples:
Mg(s) + O2(g) MgO(s)
C8H18 + O2 CO2 + H2O
C6H12O6 + O2 CO2 + H2O
Types of Reactions
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4. Single replacement
• One element replaces another
• Not every element can replace every other element
Types of Reactions
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Zn + CuCl2 Cu + ZnCl2
Cr + Pb(NO3)2 Pb + Cr(NO3)3
Mg + HCl MgCl2 + H2
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5. Double replacement• Two elements switch places
ZnBr2 + AgNO3 Zn(NO3)2 + AgBr
BaCl2 + H2SO4 BaSO4 + HCl
Na2CO3 + CaCl2 CaCO3 + NaCl
Types of Reactions
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Acid/Base Reactions• A special type of double
replacement• Acids
a. produce H+
b. Often start with H (HCl, H2SO4, H3PO4)
Types of Reactions
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• Bases
a. produce OH-
b. Hydroxides (Drano, NaOH)
NaOH + HCl
KOH + HCl
Types of Reactions
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6. Dissolving
A. Molecular Compounds
1) Contain all non-metals
2) Do not break up into ions
in water
3) Some are still soluble:
C12H22O11(s) C12H22O11(aq)
Types of Reactions
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Types of Reactions
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B. Ionic Compounds (and acids)1) Contain a metal2) Break up into ions in water.3) Examples:
NaCl(s) Na+(aq) + Cl-(aq)
CaCl2(s) Ca2+(aq) + 2Cl-(aq)
KNO3(s) K+(aq) + NO3-(aq)
4) Different than decomp. because ions are produced.
Types of Reactions
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What Ions are produced when these dissolve:
AlCl3(s)
Na2CO3(s)
NH4Cl(s)
FeBr2(s)
(NH4)2Cr2O7(s)
Types of Reactions
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BaCO3(s) BaO(s) + CO2(g)
Ca(NO3)2(s)Ca2+(aq) + 2NO3-(aq)
KOH + HBr KBr + H2O
N2 + H2 NH3
BaCl2 + MgSO4 BaSO4 + MgCl2
Cr + Pb(NO3)2 Pb + Cr(NO3)3
C5H12 + O2 CO2 + H2O
Types of Reactions
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Steps:
1. Identify the type of reaction
2. Break all elements into ions (generally keep polyatomic together)
3. Write the products
4. Balance the equation
Predicting Reactions
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K + O2
Mg + O2
Al + Cl2
Na + N2
K + F2
Predicting Reactions
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CH4 + O2
C2H6 + O2
C3H8 + O2
C6H6 + O2
Predicting Reactions
![Page 53: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/53.jpg)
CuSO4 + NaOH
BaCl2 + AgNO3
HNO3 + LiOH
H2SO4 + KOH
AgNO3 + HCl
Predicting Reactions
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K + Fe(OH)2
Al2O3 + Mg
Fe + CuCl2
HCl + Al Na + Ca(NO3)2
![Page 55: Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction.](https://reader033.fdocuments.us/reader033/viewer/2022051620/56649e3b5503460f94b2e210/html5/thumbnails/55.jpg)
CuCl2(s) (placed in water)
KNO3(s) (placed in water)
Mg(NO3)2(s) (placed in water)
Na3PO4(s) (placed in water)
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K2CO3(s) (Placed in water)
HNO3 + KOH
Pb(NO3)2 + K2SO4
Al + O2
FeCl3 (Placed in water)
H2SO4 + NaOH
C2H4 + O2
Mg + CaCl2
Types of Reactions
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C4H10 + O2
Ga + Cl2
Na + HNO3
H3PO4 + NaOH
Ba(NO3)2(s) (Placed in water)
AgNO3 + KCl
Li + O2
C6H12O6(s) (placed in water)
Types of Reactions
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Barium nitrate reacts with copper(II) sulfate
Sulfuric acid (H2SO4) plus lithium hydroxide
Zinc metal reacts with lead(II)nitrate
Propane (C3H8) is burned in oxygen
Aluminum metal reacts with bromine
Magnesium phosphate dissolves in water
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HCl + Ba(OH)2
HClO4 + LiOH
Pb(NO3)2 + KI
H3PO4 + NaOH
H3PO4 + Ca(OH)2
Types of Reactions
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2H2 + O2 2H2O
2 molecules
4molecules
7molecules
24 molecules
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CH4 + 2O2 CO2 + 2H2O
5 molecules
18 molecules
16 molecules
Molecule to Molecule
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2KBrO3 2KBr + 3O2
2 molecules
4 molecules
6molecules12 molecules
12 molecules
24 molecules
Molecule to Molecule
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H3PO4 +3NaOH Na3PO4 + 3H2O
12 molecules
75 molecules
18 molecs
Molecule to Molecule
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4Al + 3O2 2Al2O3
100 atoms
12 molecules
32 molecules
Molecule to Molecule
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a) P2 + H2 PH3
b) B2H6 + H2O H3BO3 + H2
c) C2H4 + O2 CO2 + H2O
d) KBrO3 KBr + O2
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Fe + CuSO4
KI + Pb(NO3)2
NaCl (s) C12H22O11(s) HCl + NaOH
C3H7OH + O2
Mg + O2
(NH4)2CO3
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19.2Al + 3H2 2Al H3
4Al + 3O2 2Al2O3
2Al + 3I2 2AlI3
2Al + N2 2AlN
21.2SbF5 2Sb + 5F2
PtO2 Pt + O2
3BrF Br2 + BrF3
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23.2C4H10 + 13O2 8CO2 + 10H2O
H2SO3 SO2 + H2O
2Na + O2 Na2O2
2Cu2O 4Cu + O2
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25. Ca2+(aq) + 2ClO3-(aq)
Cs+(aq) + Br-(aq)
Al3+(aq) + 3Cl-(aq)
2Cs+(aq) + SO32-(aq)
27.LiOH Li+(aq) + OH-(aq)
HI H+(aq) + I-(aq)
56.Ca(OH)2 + 2HI CaI2 + 2H2O
H2SO4 + 2LiOH 2H2O + Li2SO4
2HClO4 + Ba(OH)2 2H2O + Ba(ClO4)2
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Fe + CuSO4
Pb(NO3)2 + KI
NaCl(s)
C12H22O11(s)
HCl + NaOH
C3H7OH + O2
Mg + O2
(NH4)2CO3 (heated)
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Al + F2
C2H6 + O2
KCl(s) (in water) H2SO4 + KOH
Ba + N2
KCl + AgNO3
(NH4)2CO3 (s) (in water)
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C6H12O6 + O2
Na2CO3 + FeBr3
Fe(NO2)2 (s) (in water)
Li + S8
K2S + FeC2O4
Mg + I2
HNO2 + Mg(OH)2
C4H6 + O2
HCl + Al
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3. a) 2 1 2 1
b) 2 1 1 2
c) 1 2 1
d) 2 3 1 3
5 a) 1 2 1 2
b) 1 3 3 3
c) 8 3 8
d) 2 3 4 3
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7 a) 1 2 1 2
b) 1 2 1 1
c) 1 3 1 6
d) 1 4 1 5
9 a) 1 2 1 2b) 1 3 3 1
c) 4 1 4 3
d) 1 4 3 4
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11 a) C6H6O + 7O2 6CO2 + 3H2O
b) Ca(OH)2 + SO3 CaSO4 + H2O
c) 6Li + N2 2Li3N
d) 3Mg + 2Cr(NO3)3 2Cr + 3Mg(NO3)2
13 Fe3O4 + CO 3FeO + CO2
17 a) 2C2H6O2 + 5O2 4CO2 + 6H2O
b) 2B6H12 + 15O2 6B2O3 + 12H2O
c) C6H12 + 9O2 6CO2 + 6H2O
d) Pb(C2H5)4 +14O2 PbO2 +8CO2 +10H2O
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19. 2Al + 3H2 2AlH3
4Al + 3O2 2Al2O3
2Al + 3I2 2AlI3
2Al + N2 2AlN
21. SbF5 F2 + SbF3
PtO2 Pt + O2
3BrF Br2 + BrF3
25. Ca(ClO3)2(s) Ca2+ (aq) + 2ClO3- (aq)
CsBr(s) Cs+(aq) + Br-(aq)
AlCl3(s) Al3+ (aq) + 3Cl- (aq)
Cs2SO3(s) 2Cs+ (aq) + SO32- (aq)
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Ca3(PO4)2 + Al2(SO4)3 3CaSO4 + 2AlPO4
2C4H10 + 13O2 8CO2 + 10H2O
2Fe2S3 + 9O2 2Fe2O3 + 6SO2
Fe2O3 + 3CO 2Fe + 3CO2
3KBr + Al(NO3)3 3KNO3 + AlBr3
2HgNO3 + Na2CO3 2NaNO3 + Hg2CO3
3Ca + 2AlCl3 3CaCl2 + 2Al
2HgO 2Hg + O2
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2K + Br2 2KBr
2Au2O3 4Au + 3O2
2C6H6 + 15O2 12CO2 + 6H2O
P4 + 10F2 4PF5
H2SO4 H2O + SO3
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Types of Reactions
a)Double j) Single
b)Single k) Combustion
c)Combustion l) Synthesis
d)Decomposition m) Decomposition
e)Synthesis n) Double
f) Combustion
g)Decompostion
h)Single
i) Synthesis
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Na2S(s) 2Na+(aq) + S2-(aq)
Li2SO4(s) 2Li+(aq) + SO42-(aq)
FeCl3(s) Fe3+(aq) + 3Cl-(aq)
NaNO3(s) Na+(aq) + NO3-(aq)
Ca(NO3)2(s) Ca2+(aq) + 2NO3-(aq)
NH4Cl(s) NH4+(aq) + Cl-(aq)
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SET A
2Al + 3F2 2AlF3
3Na2CO3 + 2FeCl3 Fe2(CO3)3 + 6NaCl
AlCl3 + 3Na 3NaCl + Al
2C4H6 + 11O2 8CO2 + 6H2O
KCl(s) K+ (aq) + Cl-(aq)
2C2H6 + 7O2 4CO2 + 6H2O
Fe(NO3)2 (s) Fe2+(aq) + 2NO3-(aq)
4Na + O2 2Na2O
H2SO4 + 2KOH K2SO4 + 2H2O
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Na2S + CuSO4 Na2SO4 + CuS
3Ba + N2 Ba3N2
Mg + CuCl2 Cu + MgCl2
KCl + AgNO3 AgCl + KNO3
2HNO3 + Ca(OH)2 2H2O + Ca(NO3)2
(NH4)2CO3 2NH4+ + CO3
2-
C6H12O6 + 6O2 6CO2 + 6H2O
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SET B
3K + AlCl3 Al + 3KCl
AgNO3 + HCl AgCl + HNO3
C3H8 + 5O2 3CO2 + 4H2O
2Al + 3Cl2 2AlCl3
NaNO3(s) (in water) Na+(aq) + NO3-(aq)
HCl + KOH H2O + KCl
Mg(NO3)2 + 2Na Mg + 2NaNO3
BaCl2 + Na2SO4 2NaCl + BaSO4
CuSO4(s) (in water) Cu2+(aq) + SO42-(aq)
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2Na + I2 2NaI
Ca(OH)2 + 2HBr 2H2O + CaBr2
2C4H10 + 13O2 8CO2 + 10H2O
Mg + CuCl2 MgCl2 + Cu
3K2CO3 + 2Fe(NO3)3 6KNO3 + Fe2(CO3)3
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Set C
4Li + O2 2Li2O
Al(NO3)3(s) (in water) Al3+(aq) + 3NO3-(aq)
16Ga + 3S8 8Ga2S3
H2SO4 + 2NaOH 2H2O + Na2SO4
3Zn(C2H3O2)2 + 2Al 3Zn + 2Al(C2H3O2)3
2NaOH + CuCl2 Cu(OH)2 + 2NaCl
Fe2(SO4)3(s) (in water) 2Fe3+(aq) + 3SO42-(aq)
C2H5OH + 3O2 2CO2 + 3H2O
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3Mg(OH)2 + 2H3PO4 Mg3(PO4)2 + 6H2O
Sn + 2HCl SnCl2 + H2
4Al + 3O2 2Al2O3
2AlBr3 + 3Na2S 6NaBr + Al2S3
2CH4O + 3O2 2CO2 + 4H2O
(NH4)2CO3(s) (in water) 2NH4+(aq) + CO3
2-(aq)
8Mg + S8 8MgS
HNO3 + LiOH H2O + LiNO3
2AgNO3 + Pb Pb(NO3)2 + 2Ag
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CaCl2 + Na2CO3 NaCl + CaCO3
CaCl2 + NaOH NaCl + Ca(OH)2
CuSO4 + NaOH Na2SO4 + Cu(OH)2
NaHCO3 + HCl NaCl + H2O + CO2
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12 a) 6 1 2
b) 1 3 2
c) 2 2 1 4
d) 1 6 3 2
e) 3 2 1 6
f) 2 1 1 2
g) 4 9 4 10 2
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13. CaC2 + 2H2O Ca(OH)2 + C2H2
2KClO3 2KCl + 3O2
Zn + H2SO4 H2 + ZnSO4
PCl3 + 3H2O H3PO3 + 3HCl
3H2S + 2Fe(OH)3 Fe2S3 + 6H2O
14. SO3 + H2O H2SO4
B2S3 + 6H2O 2H3BO3 + 3H2S
Pb(NO3)2 + 2NaI 2NaNO3 + PbI2
2Hg(NO3)2 2HgO + 4NO2 + O2
Cu + 2H2SO4 CuSO4 + SO2 + 2H2O
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19. a)2 3 2 synthesis
b) 1 3 2 2 combustion
c) 6 1 2 synthesis
d) 1 1 1 decomposition
e) 1 8 7 4 combustion
20 . a) 2 9 6 6 combustion
b) 1 1 2 decomposition
c) 1 6 5 3 combustion
d) 1 3 2 synthesis
e) 1 1 2 synthesis
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Na2S(s) 2Na+(aq) + S2-(aq)
Li2SO4(s) 2Li+(aq) + SO42-(aq)
FeCl3(s) Fe3+(aq) + 3Cl-(aq)
2K + Br2 2KBr
2Au2O3 4Au + 3O2
2C6H6 + 15O2 12CO2 + 6H2O
P4 + 10F2 4PF5
H2SO4 H2O + SO3
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Fe + CuSO4 Cu + FeSO4
Pb(NO3)2 + 2KI PbI2 + 2KNO3
NaCl(s) Na+(aq) + Cl-(aq)
C12H22O11(s) C12H22O11 (aq)
HCl + NaOH H2O + NaCl
2C3H7OH + 9O2 6CO2 + 8H2O
2Mg + O2 2MgO
(NH4)2CO3 H2O(l) + 2NH3(g) + CO2(g)