Download zzChemReactionsWorksheet2

Chemical Reactions answers follow at end
Balancing Chemical Equations
1.
What is the coefficient of oxygen gas after balancing the following equation?
P(s) +
(a)
(b)
(c)
(d)
(e)
2.
P2O3(s)
What is the coefficient of oxygen gas after balancing the following equation?
(a)
(b)
(c)
(d)
(e)
+
O2(g) →
P2O5(s)
1
2
4
5
none of the above
What is the coefficient of phosphorus after balancing the following equation?
P(s)
(a)
(b)
(c)
(d)
(e)
4.
→
1
2
3
5
none of the above
P(s)
3.
O2(g)
+
O2(g)
→
P2O5(s)
1
2
4
5
none of the above
What is the coefficient of nitrogen gas after balancing the following equation?
N2(g) +
(a)
(b)
(c)
(d)
(e)
H2(g) →
NH3(g)
1
2
3
4
none of the above
Page VII-7-1 / Chemical Reactions Worksheet #2
5.
What is the coefficient of hydrogen gas after balancing the following equation?
N2(g) +
(a)
(b)
(c)
(d)
(e)
6.
What is the coefficient of ammonia gas after balancing the following equation?
(a)
(b)
(c)
(d)
(e)
H2(g) →
NH3(g)
1
2
3
4
none of the above
What is the coefficient of chlorine gas after balancing the following equation?
Fe(s) +
(a)
(b)
(c)
(d)
(e)
8.
NH3(g)
1
2
3
4
none of the above
N2(g) +
7.
H2(g) →
Cl2(g) →
FeCl3(s)
1
2
3
4
none of the above
What is the coefficient of carbon dioxide after balancing the following equation?
KHCO3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
K2CO3(s) +
H2O(g) +
1
2
3
4
none of the above
Page VII-7-2 / Chemical Reactions Worksheet #2
CO2(g)
9.
What is the coefficient of carbon dioxide after balancing the following equation?
Cr2(CO3)3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Cr2O3(s) +
CO2(g)
1
2
3
4
none of the above
10. What is the coefficient of oxygen gas after balancing the following equation?
Δ
→
AgClO3(s)
(a)
(b)
(c)
(d)
(e)
AgCl(s) +
O2(g)
1
2
3
4
none of the above
11. What is the coefficient of oxygen gas after balancing the following equation?
Δ
LiNO3(s) →
(a)
(b)
(c)
(d)
(e)
LiNO2(s) +
O2(g)
1
2
3
4
none of the above
12. What is the coefficient of oxygen gas after balancing the following equation?
Δ
HgO(s) →
(a)
(b)
(c)
(d)
(e)
Hg(s) +
O2(g)
1
2
3
4
none of the above
Page VII-7-3 / Chemical Reactions Worksheet #2
13. What is the coefficient of oxygen gas after balancing the following equation?
H2O2(l)
(a)
(b)
(c)
(d)
(e)
Δ
→
H2O(l) +
O2(g)
1
2
3
4
none of the above
14. What is the coefficient of silver metal after balancing the following equation?
Cu(s) +
(a)
(b)
(c)
(d)
(e)
AgNO3(aq) →
Cu(NO3)2(aq) +
Ag(s)
1
2
3
4
none of the above
15. What is the coefficient of Cd metal after balancing the following equation?
Al(s) +
(a)
(b)
(c)
(d)
(e)
Cd(C2H3O2)2(aq) →
Al(C2H3O2)3(aq) +
Cd(s)
1
2
3
4
none of the above
16. What is the coefficient of nickel metal after balancing the following equation?
Fe(s) +
(a)
(b)
(c)
(d)
(e)
Ni(NO3)2(aq)
→
Fe(NO3)3(aq) +
1
2
3
4
none of the above
Page VII-7-4 / Chemical Reactions Worksheet #2
Ni(s)
17. What is the coefficient of hydrogen gas after balancing the following equation?
Pb(s) +
(a)
(b)
(c)
(d)
(e)
HNO3(aq) →
Pb(NO3)4(aq) +
H2(g)
1
2
3
4
none of the above
18. What is the coefficient of hydrogen gas after balancing the following equation?
Co(s) +
(a)
(b)
(c)
(d)
(e)
HCl(aq)
→
CoCl3(aq) +
H2(g)
1
2
3
4
none of the above
19. What is the coefficient of hydrogen gas after balancing the following equation?
Mn(s) +
(a)
(b)
(c)
(d)
(e)
H2SO4(aq) →
MnSO4(aq) +
H2(g)
1
2
3
4
none of the above
20. What is the coefficient of sodium metal after balancing the following equation?
Na(s) +
(a)
(b)
(c)
(d)
(e)
H2O(l) →
NaOH(aq) +
H2(g)
1
2
3
4
none of the above
Page VII-7-5 / Chemical Reactions Worksheet #2
21. What is the coefficient of water after balancing the following equation?
H2O(l) →
Li(s) +
(a)
(b)
(c)
(d)
(e)
LiOH(aq) +
H2(g)
1
2
3
4
none of the above
22. What is the coefficient of hydrogen gas after balancing the following equation?
Ca(s) +
(a)
(b)
(c)
(d)
(e)
H2O(l) →
Ca(OH)2(aq) +
H2(g)
1
2
3
4
none of the above
23. What is the coefficient of AgCl after balancing the following equation?
AlCl3(aq) +
(a)
(b)
(c)
(d)
(e)
AgNO3(aq) →
Al(NO3)3(aq) +
AgCl(s)
1
2
3
6
none of the above
24. What is the coefficient of NaCl after balancing the following equation?
CrCl3(aq) +
(a)
(b)
(c)
(d)
(e)
Na2CO3(aq) →
Cr2(CO3)3(s) +
1
2
3
6
none of the above
Page VII-7-6 / Chemical Reactions Worksheet #2
NaCl(aq)
25. What is the coefficient of KNO3 after balancing the following equation?
Au(NO3)3(aq) +
(a)
(b)
(c)
(d)
(e)
K2CrO4(aq) →
Au2(CrO4)3(s) +
KNO3(aq)
1
2
3
6
none of the above
26. What is the coefficient of water after balancing the following equation?
H2SO4(aq) +
(a)
(b)
(c)
(d)
(e)
NaOH(aq) →
Na2SO4(aq) +
H2O(l)
1
2
3
6
none of the above
27. What is the coefficient of water after balancing the following equation?
HC2H3O2(aq) +
(a)
(b)
(c)
(d)
(e)
Ca(OH)2(aq) →
Ca(C2H3O2)2(aq) +
H2O(l)
1
2
3
6
none of the above
28. What is the coefficient of water after balancing the following equation?
H3PO4(aq) +
(a)
(b)
(c)
(d)
(e)
Ba(OH)2(aq) →
Ba3(PO4)2(s) +
1
2
3
6
none of the above
Page VII-7-7 / Chemical Reactions Worksheet #2
H2O(l)
Classifying Chemical Reactions
29. Which of the following types of chemical reactions is illustrated below?
N2(g)
(a)
(b)
(c)
(d)
(e)
+ H2(g) → NH3(g)
combination
decomposition
single replacement
double replacement
neutralization
30. Which of the following types of chemical reactions is illustrated below?
SO2(g)
(a)
(b)
(c)
(d)
(e)
+ O2(g) → SO3(g)
combination
decomposition
single replacement
double replacement
neutralization
31. Which of the following types of chemical reactions is illustrated below?
Δ
KHCO3(s) →
(a)
(b)
(c)
(d)
(e)
K2CO3(s) +
H2O(g) + CO2(g)
combination
decomposition
single replacement
double replacement
neutralization
32. Which of the following types of chemical reactions is illustrated below?
KClO3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
KCl(s)
+ O2(g)
combination
decomposition
single replacement
double replacement
neutralization
Page VII-7-8 / Chemical Reactions Worksheet #2
33. Which of the following types of chemical reactions is illustrated below?
Zn(s) + HCl(aq)
(a)
(b)
(c)
(d)
(e)
→
ZnCl2(aq) + H2(g)
combination
decomposition
single replacement
double replacement
neutralization
34. Which of the following types of chemical reactions is illustrated below?
Sr(s) + H2O(l)
(a)
(b)
(c)
(d)
(e)
→
Sr(OH)2(aq) + H2(g)
combination
decomposition
single replacement
double replacement
neutralization
35. Which of the following types of chemical reactions is illustrated below?
AlCl3(aq) + AgNO3(aq) → Al(NO3)3(aq) + AgCl(s)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
36. Which of the following types of chemical reactions is illustrated below?
FeBr3(aq) + AgNO3(aq) → Fe(NO3)3(aq) + AgBr(s)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
Page VII-7-9 / Chemical Reactions Worksheet #2
37. Which of the following types of chemical reactions is illustrated below?
H2SO4(aq) + NaOH(aq) → Na2SO4(aq) + H2O(l)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
38. Which of the following types of chemical reactions is illustrated below?
HClO4(aq) + KOH(aq) → KClO4(aq) + H2O(l)
(a)
(b)
(c)
(d)
(e)
combination
decomposition
single replacement
double replacement
neutralization
Combination Reactions
39. What is the predicted product from the following combination reaction?
(a)
(b)
(c)
(d)
(e)
LiO
Li2O
LiO2
Li2O3
Li3O2
Li(s) + O2(g)
Δ
→
40. What is the predicted product from the following combination reaction?
(a)
(b)
(c)
(d)
(e)
CaO
Ca2O
CaO2
Ca2O3
Ca3O2
Ca(s) + O2(g)
Δ
→
Page VII-7-10 / Chemical Reactions Worksheet #2
41. What is the predicted product from the following combination reaction?
(a)
(b)
(c)
(d)
(e)
AlO
Al2O
AlO2
Al2O3
Al3O2
Al(s) + O2(g)
Δ
→
42. What is the predicted product from the following combination reaction?
(a)
(b)
(c)
(d)
(e)
KCl
K2Cl
KCl2
KCl3
K3Cl
K(s) + Cl2(g)
Δ
→
43. What is the predicted product from the following combination reaction?
(a)
(b)
(c)
(d)
(e)
SrBr
Sr2Br
SrBr2
Sr2Br3
Sr3Br2
Sr(s) + Br2(l)
Δ
→
44. What is the predicted product from the following combination reaction?
(a)
(b)
(c)
(d)
(e)
ZnI
ZnI2
Zn2I
Zn2I3
Zn3I2
Zn(s) + I2(s)
Δ
→
Page VII-7-11 / Chemical Reactions Worksheet #2
45. What is the formula of the predicted product from heating magnesium metal
and nitrogen gas?
(a) MgN
(b) MgN2
(c) Mg2N
(d) Mg2N3
(e) Mg3N2
46. What is the formula of the predicted product from heating potassium metal and
powdered phosphorus?
(a) KP
(b) KP3
(c) K3P
(d) K2P3
(e) K3P2
47. What is the formula of the predicted product from heating cadmium metal and
powdered sulfur?
(a) CdS
(b) Cd2S
(c) CdS2
(d) Cd2S3
(e) Cd3S2
Decomposition Reactions (
48. What are the predicted products from the following decomposition reaction?
LiHCO3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Li, H2, and CO2
Li, H2O, and CO2
Li2CO3, H2, and CO2
Li2CO3, H2O, and CO2
Li2CO3 and H2O
Page VII-7-12 / Chemical Reactions Worksheet #2
49. What are the predicted products from the following decomposition reaction?
Zn(HCO3)2(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Zn, H2, and CO2
Zn, H2O, and CO2
ZnCO3, H2, and CO2
ZnCO3, H2O, and CO2
ZnCO3 and H2O
50. What are the predicted products from the following decomposition reaction?
Al(HCO3)3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Al, H2, and CO2
Al, H2O, and CO2
Al2(CO3)3, H2, and CO2
Al2(CO3)3, H2O, and CO2
Al2(CO3)3 and H2O
51. What are the predicted products from the following decomposition reaction?
Fe(HCO3)3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Fe, H2O, and CO2
FeCO3, H2, and CO2
FeCO3, H2O, and CO2
Fe2(CO3)3, H2O, and CO2
Fe2(CO3)3, H2, and CO2
52. What are the predicted products from the following decomposition reaction?
Cu2CO3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Cu and CO2
Cu2O and CO
Cu2O and CO2
CuO and CO
CuO and CO2
Page VII-7-13 / Chemical Reactions Worksheet #2
53. What are the predicted products from the following decomposition reaction?
PbCO3(s)
Δ
→
(a) Pb and CO2
(b) PbO and CO
(c) PbO and CO2
(d) PbO2 and CO
(e) PbO2 and CO2
54. What are the predicted products from the following decomposition reaction?
Fe2(CO3)3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Fe and CO2
FeO and CO
FeO and CO2
Fe2O3 and CO
Fe2O3 and CO2
55. What are the predicted products from the following decomposition reaction?
NaClO3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Na and CO2
Na, Cl2, and O2
NaCl and H2O
NaCl and O2
NaCl and CO2
56. What are the predicted products from the following decomposition reaction?
Zn(ClO3)2(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Zn and CO2
Zn, Cl2, and O2
ZnCl2 and H2O
ZnCl2 and O2
ZnCl2 and CO2
Page VII-7-14 / Chemical Reactions Worksheet #2
57. What are the predicted products from the following decomposition reaction?
Al(ClO3)3(s)
(a)
(b)
(c)
(d)
(e)
Δ
→
Al and CO2
Al, Cl2, and O2
AlCl3 and H2O
AlCl3 and O2
AlCl3 and CO2
Single-Replacement Reactions (
58. What are the products from the following single–replacement reaction?
Zn(s) + CuSO4(aq) →
(a)
(b)
(c)
(d)
(e)
Cu and ZnSO4
Cu and ZnSO3
CuO and ZnSO4
CuO and ZnSO3
no reaction
59. What are the products from the following single–replacement reaction?
Cd(s) + AgNO3(aq) →
(a)
(b)
(c)
(d)
(e)
Ag and Cd(NO3)2
Ag and Cd(NO2)2
Ag2O and Cd(NO3)2
Ag2O and Cd(NO2)2
no reaction
60. What are the products from the following single–replacement reaction?
Al(s) + Pb(NO3)2(aq) →
(a)
(b)
(c)
(d)
(e)
Pb and Al(NO3)3
Pb and Al(NO2)3
PbO and Al(NO3)3
PbO and Al(NO2)3
no reaction
Page VII-7-15 / Chemical Reactions Worksheet #2
61. What are the products from the following single–replacement reaction?
Mg(s) + H2SO4(aq) →
(a)
(b)
(c)
(d)
(e)
MgO and H2SO3
MgO and H2S
MgSO4 and H2
MgSO4 and H2O
no reaction
62. What are the products from the following single–replacement reaction?
Zn(s) + HNO3(aq) →
(a)
(b)
(c)
(d)
(e)
ZnO and HNO2
Zn(NO2)2 and H2
Zn(NO3)2 and H2
Zn(NO3)2 and H2O
no reaction
63. What are the products from the following single–replacement reaction?
K(s) + H2O(l) →
(a)
(b)
(c)
(d)
(e)
K2O and H2
K2O and H2O
KOH and H2
KOH and H2O
no reaction
64. What are the products from the following single–replacement reaction?
Ba(s) + H2O(l) →
(a)
(b)
(c)
(d)
(e)
BaO and H2
BaO and H2O
Ba(OH)2 and H2
Ba(OH)2 and H2O
no reaction
Page VII-7-16 / Chemical Reactions Worksheet #2
Solubility Rules
65. Which of the following solid compounds is soluble in water?
(a) Na2CO3
(b) CuC2H3O2
(c) AgNO3
(d) all of the above
(e) none of the above
66. Which of the following solid compounds is soluble in water?
(a) CaCO3
(b) PbSO4
(c) AlPO4
(d) all of the above
(e) none of the above
67. Which of the following solid compounds is soluble in water?
(a) NiCO3
(b) PbCrO4
(c) Ag3PO4
(d) CuS
(e) Ba(OH)2
68. Which of the following solid compounds is insoluble in water?
(a) PbCl2
(b) Hg2I2
(c) BaSO4
(d) all of the above
(e) none of the above
69. Which of the following solid compounds is insoluble in water?
(a) Li2CO3
(b) AgC2H3O2
(c) Cu(NO3)2
(d) all of the above
(e) none of the above
Page VII-7-17 / Chemical Reactions Worksheet #2
70. Which of the following solid compounds is insoluble in water?
(a) (NH4)2CO3
(b) K2CrO4
(c) BaSO4
(d) Na2S
(e) Sr(OH)2
Double-Replacement Reactions (
71. What are the products from the following double–replacement reaction?
AgNO3(aq) + NaCl(aq) →
(a)
(b)
(c)
(d)
(e)
Ag3N and NaClO3
AgCl and NaNO2
AgCl and NaNO3
AgClO3 and NaNO2
AgClO3 and NaNO3
72. What are the products from the following double–replacement reaction?
BaCl2(aq) + K2SO4(aq) →
(a)
(b)
(c)
(d)
(e)
BaS and KClO4
BaSO3 and KCl
BaSO3 and KClO4
BaSO4 and KCl
BaSO4 and KClO4
73. What are the products from the following double–replacement reaction?
AgNO3(aq) + Li3PO4(aq) →
(a)
(b)
(c)
(d)
(e)
Ag3P and LiNO3
Ag3PO3 and LiNO2
Ag3PO3 and LiNO3
Ag3PO4 and LiNO2
Ag3PO4 and LiNO3
Page VII-7-18 / Chemical Reactions Worksheet #2
Neutralization Reactions
74. What are the predicted products from the following neutralization reaction?
HCl(aq) + NH4OH(aq) →
(a)
(b)
(c)
(d)
(e)
NH3Cl and H2O
NH3Cl and O2
NH4Cl and H2O
NH4Cl and O2
no reaction
75. What are the predicted products from the following neutralization reaction?
HC2H3O2(aq) + Ca(OH)2(aq) →
(a)
(b)
(c)
(d)
(e)
CaCO3 and H2O
Ca(HCO3)2 and H2
Ca(HCO3)2 and H2O
Ca(C2H3O2)2 and H2
Ca(C2H3O2)2 and H2O
76. What are the predicted products from the following neutralization reaction?
HNO3(aq) + Ba(OH)2(aq) →
(a)
(b)
(c)
(d)
(e)
Ba3N2 and H2O
Ba(NO2)2 and H2
Ba(NO2)2 and H2O
Ba(NO3)2 and H2
Ba(NO3)2 and H2O
77. What are the products from the complete neutralization of sulfuric acid with
aqueous sodium hydroxide?
(a) Na2S(aq) and H2O(l)
(b) NaHSO3(aq) and H2O(l)
(c) NaHSO4(aq) and H2O(l)
(d) Na2SO3(aq) and H2O(l)
(e) Na2SO4(aq) and H2O(l)
Page VII-7-19 / Chemical Reactions Worksheet #2
78. What are the products from the complete neutralization of carbonic acid with
aqueous potassium hydroxide?
(a) K2CO3(aq) and H2O(l)
(b) KHCO3(aq) and H2O(l)
(c) KHCO4(aq) and H2O(l)
(d) KC2H3O2(aq) and H2O(l)
(e) K2C2H3O2(aq) and H2O(l)
79. What are the products from the complete neutralization of phosphoric acid with
aqueous lithium hydroxide?
(a) LiH2PO4(aq) and H2O(l)
(b) Li2HPO4(aq) and H2O(l)
(c) Li3PO4(aq) and H2O(l)
(d) LiHPO4(aq) and H2O(l)
(e) Li2PO4(aq) and H2O(l)
Combustion Reactions
80. Methane, CH4, can be used as fuel in an automobile to reduce pollution. What is the
coefficient of oxygen in the balanced equation for the reaction?
spark
CH4(g) +
(a)
(b)
(c)
(d)
(e)
O2(g)
→
CO2(g) +
H2O(g)
1
2
3
4
none of the above
81. Ethane, C2H6, burns to give carbon dioxide and water. What is the coefficient of
oxygen in the balanced equation for the reaction?
spark
C2H6(g) +
(a)
(b)
(c)
(d)
(e)
O2(g)
→
CO2(g) +
5
7
10
14
none of the above
Page VII-7-20 / Chemical Reactions Worksheet #2
H2O(g)
82. Propane, C3H8, is flammable and used in rural areas where natural gas is not
available. What is the coefficient of oxygen in the balanced equation for the
combustion of propane?
spark
C3H8(g) +
(a)
(b)
(c)
(d)
(e)
O2(g)
→
CO2(g) +
H2O(g)
1
5
7
10
none of the above
83. Butane, C4H10, is flammable and used in butane lighters. What is the coefficient of
oxygen in the balanced equation for the combustion of butane?
spark
C4H10(g) +
(a)
(b)
(c)
(d)
(e)
O2(g)
→
CO2(g) +
H2O(g)
9
13
18
26
none of the above
84. Octane, C8H18, is a major component in gasoline. What is the coefficient of oxygen
in the balanced equation for the combustion of octane?
spark
C8H18(g) +
(a)
(b)
(c)
(d)
(e)
O2(g)
→
CO2(g) +
17
25
34
50
none of the above
Page VII-7-21 / Chemical Reactions Worksheet #2
H2O(g)
85. Ethanol, C2H5OH, is made from fermenting grain and can be blended with gasoline
to make “gasohol.” If the combustion of “gasohol” produces carbon dioxide and
water, what is the coefficient of oxygen in the balanced equation?
spark
C2H5OH(g)
(a)
(b)
(c)
(d)
(e)
+
O2(g)
CO2(g)
→
+
H2O(g)
1
2
3
6
none of the above
86. Methanol, CH3OH, is derived from natural gas and can be blended with gasoline to
make “gasohol.” If the combustion of “gasohol” produces carbon dioxide and
water, what is the coefficient of oxygen in the balanced equation?
CH3OH(g)
(a)
(b)
(c)
(d)
(e)
+
O2(g)→
spark
CO2(g) +
1
2
3
6
none of the above
Page VII-7-22 / Chemical Reactions Worksheet #2
H2O(g)
Answer Key
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
C
D
C
A
C
B
C
A
C
C
A
A
A
B
C
C
B
C
A
B
B
A
C
D
D
B
B
D
A
A
B
B
C
C
D
D
E
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
E
B
A
D
A
C
B
E
C
A
D
D
D
D
C
C
E
D
D
D
A
A
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
73.
74.
A
C
C
C
C
D
E
E
D
E
C
C
D
E
C
Page VII-7-23 / Chemical Reactions Worksheet #2
75.
E
76.
77.
78.
79.
80.
81.
82.
83.
84.
85.
86.
E
E
A
C
B
B
B
B
B
C
C