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INV 7 Chemical Reactions Review

Total questions: 42

Worksheet time: 1hrs 23mins

Name
Class
Date
1.

Classify the following chemical reaction


BaCl2(aq) + K2CrO4(aq) --> BaCrO4(s) + 2KCl(aq)




a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

2.

Classify the follow chemical reaction.


2C6H6(l) + 15O2 --> 6H2O(l) + 12CO2(g)

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

3.

2Na +S → Na2S

a)

Double Replacement

b)

Decomposition

c)

Combustion

d)

Synthesis

4.

2 NO2 ---> 2 O2 + N2

a)

Synthesis

b)

Single Replacement

c)

Decomposition

d)

Combustion

5.

3 Pb + 2 H3PO4 ----> 3 H2 + 1 Pb3(PO4)2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

6.

___C3H8 +___O2 --> ___CO2 + ___H2O

a)

1:5:3:4

b)

2:10:6:8

c)

already balanced

d)

1:5:5:4

7.
In the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
a)
Reduced
b)
Oxidized
c)
None of the above
8.
     In the reaction Zn + H2O --> ZnO2 + H2
 which element, if any, is oxidized? 
a)
Zinc
b)
Hydrogen
c)
Oxygen
d)
None
9.

What are the products of this reaction?

Cu+ AgNO3 -->

a)

Cu(NO3)2+Ag

b)

Cu + NO3 + Ag

c)

CuAg+NO3

d)

Cu+ AgNO3

10.

What are the products of this reaction?

Zn(s) + H2SO4(aq) -->

a)

Zn(SO4)2 + H

b)

ZnSO4 + H2

c)

ZnSO4 + H

d)

Zn2SO4 + H2

e)

No reaction

11.

What are the products of this reaction:

C2H4 + O2 -->

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H

d)

CO2 + H2O

e)

No Reaction

12.

Predict the products for the double replacement reaction

2 AlBr3 + 3 K2SO4 →

a)

K2Br3 + AlSO4

b)

K2Al + Br3SO4

c)

6 KBr + Al2(SO4)3

d)

KBr3 + Al(SO4)3

13.

Predict the products for the double replacement reaction

FeCl3 + 3 NaOH →

a)

Fe(OH)3 + 3 NaCl

b)

FeOH + NaCl3

c)

NaFe + Cl3OH

d)

ClNa + (OH)3Fe

14.

When sodium chloride reacts with fluorine in a single replacement reaction, fluorine will replace _____.

____ NaCl + ____ F2

a)

sodium, Na

b)

chlorine, Cl

c)

Sodium chloride, NaCl

d)

no reaction will occur

15.
in a reaction, aqueous barium chloride reacts with aqueous potassium carbonate to produce solid barium carbonate and aqueous potassium chloride. what is the correct balanced equation.
a)
Ba2Cl(aq) + KCO3(aq) --> BaCO3(s) + KCl(aq)
b)
BaCl2(aq) + K2CO3(aq) --> BaCO3(s) + 2KCl(aq)
c)
BaCl(aq) + K2CO3(aq) --> BaCO3(s) + K2Cl(aq)
d)
Ba2Cl2(aq) + KCO3(aq) --> Ba2CO3(s) + KCl2(aq)
16.

What is the missing product?


Na2CO3 + 2 AgNO3 ➔ 2 NaNO3 + __________

a)

2 Ag3Na

b)

2 AgCO3

c)

Ag2CO3

17.

Which of the following compounds is SOLUBLE?

a)

copper carbonate

b)

calcium carbonate

c)

potassium carbonate

d)

strontium carbonate

18.

What would be the formula of the precipitate that forms when Pb(NO3)2 (aq) and K2SO4 (aq) are mixed?

a)

K(NO3)2

b)

PbSO4

c)

PbK2

d)

H2O

19.

Considering the following precipitation reaction:

Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)

What is the correct complete ionic equation?

a)

Pb2+ + (NO3)2- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-

b)

Pb2+ + 2NO3- +2K+ + I- → PbI2(s) + 2K+ + NO3-

c)

Pb2+ + 2NO3- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-

d)

Pb2+ + 2NO3- + 2K+ + 2I- → Pb2+ + 2I- + 2K+ + 2NO3-

20.
Which is the correct net ionic equation for the reaction of AgNO3 and CaCl2?
a)
Ca2+(aq) +  2Cl- (aq) → CaCl(s)
b)
Ag+(aq)  +  Cl- (aq) → AgCl(s)
c)
Ag +  Cl  →  AgCl
d)
Ag+  +  Ca2+   →Ag2Ca (s)
21.
Which of the following does NOT form a precipitate?
a)
Pb(NO3)2(aq) + 2KI(aq) →
b)
Sr(NO3)2 (aq) + K2SO4(aq) →
c)
AgNO3(aq) + Na2S(aq) →
d)
 Pb(NO3)2(aq) + AgNO3(aq) →
22.
What are the spectator ions in the reaction of sodium chloride with silver nitrate?
a)
silver and nitrate
b)
sodium and chloride
c)
sodium and nitrate
d)
silver and chloride
23.
What are the spectator ions in this reaction?
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
 
a)
Cu2+ and OH1-
b)
Na2+ and Cl2-
c)
Na1+ and Cl1-
d)
Na1+ and OH1-
24.

Which of the following represents the correct products for the reaction below:

Na3PO4(aq) + LiCl(aq) →

a)

Li3PO4(s) + NaCl(aq)

b)

LiPO4(s) + Na3Cl(aq)

c)

Li3PO4(aq) + NaCl(s)

d)

no reaction

25.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
26.
What are the products of the following reaction?
H2SO4  +  KOH  -->  
a)
HK  +  HSO4
b)

H2O  +  K

c)
H2O  +  K2SO4
d)

H2O  +  KSO4

27.

Which element was reduced in the reaction below?

Na + PbCl2 → Pb + NaCl

a)

Na

b)

Pb

c)

Cl

d)

No element was reduced

28.

Predict the product(s) for cobalt (III) bromide + fluorine -->

a)

No reaction occurs.

b)

fluorobromide + cobalt

c)

bromofluoride + cobalt

d)

cobalt(III)fluoride + bromine

29.

Predict the product(s) of zinc + cesium chloride -->

a)

No reaction occurs.

b)

cesium zincide + chlorine

30.
What are the products of the neutralization shown below?
Ca(OH)2  +  H2CO3  -->  
a)
H2O  +  Ca2CO3
b)
CaO +  CO3
c)
H2O  +  CaCO3
d)
H2O  + NaCl
31.

Which of the following is a double replacement reaction?


a) NaCl + AgNO3 → AgCl + NaNO3
b) 2H2O → 2H2 + O2
c) Zn + 2HCl → ZnCl2 + H2
d) CH4 + 2O2 → CO2 + 2H2O

a)

b

b)

a

c)

c

d)

d

32.

What is the net ionic equation for the reaction between BaCl2(aq) and Na2SO4(aq)?

a)

Na+(aq) + Cl-(aq) → NaCl(s)

b)

No reaction occurs

c)

BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq)

d)

Ba2+(aq) + SO42-(aq) → BaSO4(s)

33.

Which compound will form a precipitate when mixed with aqueous silver nitrate?

a)

Na2SO4

b)

KNO3

c)

NaCl

d)

LiBr

34.

What are the products of the reaction below?

Al2(SO4)3 + 6 NaOH →

a)

AlNa6 + SO4OH3

b)

2 Al(OH)3 + 3 Na2SO4

c)

AlSO4 + NaOH

d)

Al(OH)3 + NaSO4

35.

Which of the following reactions is a decomposition reaction?

a)

NaOH + HCl → NaCl + H2O

b)

CH4 + 2O2 → CO2 + 2H2O

c)

2KClO3 → 2KCl + 3O2

d)

Zn + CuSO4 → ZnSO4 + Cu

36.

Which compound will NOT form a precipitate when mixed with aqueous barium chloride?

a)

Na2SO4

b)

K2CO3

c)

NaNO3

d)

Na2HPO4

37.

What is the net ionic equation for the reaction between Na2CO3(aq) and CaCl2(aq)?

a)

Na+(aq) + Cl-(aq) → NaCl(s)

b)

No reaction occurs

c)

Ca2+(aq) + CO32-(aq) → CaCO3(s)

d)

Na2CO3(aq) + CaCl2(aq) → CaCO3(s) + 2NaCl(aq)

38.

Which compound is insoluble in water?

a)

AgCl

b)

K2SO4

c)

NH4Cl

d)

NaNO3

39.

Which of the following is a single replacement reaction?

a)

2H2 + O2 → 2H2O

b)

Zn + 2HCl → ZnCl2 + H2

c)

2KClO3 → 2KCl + 3O2

d)

NaOH + HNO3 → NaNO3 + H2O

40.

Which of the following reactions is a synthesis (combination) reaction?

a) 2H2 + O2 → 2H2O
b) CaCO3 → CaO + CO2
c) Zn + CuSO4 → ZnSO4 + Cu
d) NaCl + AgNO3 → AgCl + NaNO3

a)

d

b)

c

c)

b

d)

a

41.

Which compound will form a precipitate when mixed with aqueous sodium sulfate?

a)

Ammonium sulfate

b)

Sodium chloride

c)

Barium chloride

d)

Potassium nitrate

42.

What are the products of the reaction below?

CaCl2 + Na2CO3 →

a)

No reaction

b)

CaNaCO3 + Cl2

c)

CaNa2 + CO3Cl2

d)

CaCO3 + 2NaCl

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