HClO4 Aq CuOH2 Aq CuClO4 2a
Hclo4aq Cuoh2aq Cuclo42a
Hclo4aq Cuoh2aq Cuclo42a
HClO4(aq) + Cu(OH)2(aq) → Cu(ClO4)2(aq) + H2O(l)
1. What is the coefficient in front of HClO4(aq)?
A) 1
B) 2
C) 3
D) 4
E) 5
2. What is the coefficient in front of H2O(l)?
A) 1
B) 2
C) 3
D) 4
E) 5
3. What is the coefficient in front of Cu(ClO4)2(aq)?
A) 1
B) 2
C) 3
D) 4
E) 5
4. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
Bi(s) + O2(g) → Bi2O3(s)
5. What is the coefficient in front of Bi(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
6. What is the coefficient in front of O2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
7. What is the coefficient in front of Bi2O3(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
8. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) none of these
---
Ba(OH)2(aq) + Fe2(SO4)3(aq) → Fe(OH)3(s) + BaSO4(s)
9. What is the coefficient in front of Fe2(SO4)3?
A) 1
B) 2
C) 3
D) 4
E) 5
10. What is the coefficient in front of BaSO4(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
11. What is the coefficient in front of Fe(OH)3(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
12. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
(NH4)2Cr2O7(s) → Cr2O3(s) + N2(g) + H2O(l)
13. What is the coefficient in front of (NH4)2Cr2O7(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
14. What is the coefficient in front of H2O(l)?
A) 1
B) 2
C) 3
D) 4
E) 5
15. What is the coefficient in front of N2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
16. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
Zn(s) + H3PO4(aq) → H2(g) + Zn3(PO4)2(s)
17. What is the coefficient in front of Zn(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
18. What is the coefficient in front of H3PO4(aq)?
A) 1
B) 2
C) 3
D) 4
E) 5
19. What is the coefficient in front of H2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
20. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
CS2(g) + O2(g) → CO2(g) + SO2(g)
21. What is the coefficient in front of O2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
22. What is the coefficient in front of SO2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
23. What is the coefficient in front of CO2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
24. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) none of these
---
N2H4(l) → NH3(s) + N2(g)
25. What is the coefficient in front of N2H4(l)?
A) 1
B) 2
C) 3
D) 4
E) 5
26. What is the coefficient in front of NH3(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
27. What is the coefficient in front of N2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
28. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) none of these
---
Al(s) + Cl2(g) → AlCl3(s)
29. What is the coefficient in front of Al(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
30. What is the coefficient in front of Cl2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
31. What is the coefficient in front of AlCl3(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
32. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
K3PO4(aq) + SrCl2(aq) → Sr3(PO4)2(s) + KCl(aq)
33. What is the coefficient in front of K3PO4(aq)?
A) 1
B) 2
C) 3
D) 4
E) 5
34. What is the coefficient in front of SrCl2(aq)?
A) 1
B) 2
C) 3
D) 4
E) 5
35. What is the coefficient in front of KCl(aq)?
A) 3
B) 4
C) 5
D) 6
E) 8
36. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
HBr(aq) + Fe2O3(aq) → FeBr3(aq) + H2O(l)
37. What is the coefficient in front of HBr(aq)?
A) 3
B) 4
C) 5
D) 6
E) 8
38. What is the coefficient in front of FeBr3(aq)?
A) 1
B) 2
C) 3
D) 4
E) 5
39. What is the coefficient in front of H2O(l)?
A) 1
B) 2
C) 3
D) 4
E) 5
40. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) neutralization
---
CS2(g) + Cl2(g) → CCl4(g) + SCl2(g)
41. What is the coefficient in front of Cl2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
42. What is the coefficient in front of CCl4(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
43. What is the coefficient in front of SCl2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
44. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) none of these
---
N2H4(l) + O2(g) → H2O(g) + N2(g)
45. What is the coefficient in front of N2(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
46. What is the coefficient in front of H2O(g)?
A) 1
B) 2
C) 3
D) 4
E) 5
47. What is the coefficient in front of N2H4(l)?
A) 1
B) 2
C) 3
D) 4
E) 5
48. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) none of these
---
Al(s) + S(s) → Al2S3(s)
49. What is the coefficient in front of Al(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
50. What is the coefficient in front of S(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
51. What is the coefficient in front of Al2S3(s)?
A) 1
B) 2
C) 3
D) 4
E) 5
52. What type of reaction is this?
A) combination
B) decomposition
C) single replacement
D) double replacement
E) none of these
---
Cs(s) + I2(s) → CsI(s)
53. What is the coefficient in front of CsI(s)?
A) 1
B) 2
C) 3
D) 4
E) none of these
54. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
P(s) + H2(s) → PH3(g)
55. What is the coefficient in front of PH3(g)?
A) 1
B) 2
C) 3
D) 4
E) none of these
56. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
Co2S(s) + S8(s) → CoS(s)
57. What is the coefficient in front of Co2S(s)?
A) 8
B) 12
C) 16
D) 15
E) none of these
58. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
CaO(s) + CO2(g) → CaCO3(s)
59. What is the coefficient in front of CO2(g)?
A) 1
B) 2
C) 3
D) 4
E) none of these
60. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
Au2O3(s) + CO2(g) → Au2(CO3)3(s)
61. What is the coefficient in front of CO2(g)?
A) 1
B) 2
C) 3
D) 4
E) none of these
62. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
PCl3(s) + H2O(l) → H3PO3(aq) + HCl(aq)
63. What is the coefficient in front of H2O(l)?
A) 1
B) 2
C) 3
D) 4
E) none of these
64. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
C2H6(g) + O2(g) → CO2(g) + H2O(g)
65. What is the coefficient in front of O2(g)?
A) 6
B) 7
C) 8
D) 10
E) none of these
66. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
C3H6O2(l) + O2(g) → CO2(g) + H2O(g)
67. What is the coefficient in front of CO2(g)?
A) 4
B) 6
C) 8
D) 10
E) none of these
68. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
C6H12O6(s) + O2(g) → CO2(g) + H2O(g)
69. What is the coefficient in front of O2(g)?
A) 7
B) 9
C) 10
D) 11
E) none of these
70. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
C6H6(g) + Cl2(g) → C6H4Cl2(g) + HCl(g)
71. What is the coefficient in front of HCl(g)?
A) 1
B) 2
C) 3
D) 4
E) none of these
72. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
Pb(NO3)2(aq) + Na2SO4(aq) → PbSO4(s) + NaNO3(aq)
73. What is the coefficient in front of NaNO3(aq)?
A) 1
B) 2
C) 3
D) 4
E) none of these
74. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
Fe2O3(s) + C(s) → Fe(s) + CO2(g)
75. What is the coefficient in front of C(s)?
A) 1
B) 2
C) 3
D) 4
E) none of these
76. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
TiCl4(s) + Al(s) → Ti(s) + AlCl3(s)
77. What is the coefficient in front of Ti(s)?
A) 1
B) 2
C) 3
D) 4
E) none of these
78. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
CaH2(s) + H2O(l) → Ca(OH)2(aq) + H2(g)
79. What is the coefficient in front of H2O(l)?
A) 1
B) 2
C) 3
D) 4
E) none of these
80. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
HF(g) + B(s) → HBF4(s) + H2(g)
81. What is the coefficient in front of H2(g)?
A) 1
B) 2
C) 3
D) 4
E) none of these
82. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
Mg(ClO3)2(s) + MnO2(s) → MgCl2(s) + O2(g) + MnO2(s)
83. What is the coefficient in front of O2(g)?
A) 1
B) 2
C) 3
D) 4
E) none of these
84. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
B2O3(s) + C(s) → B4C3(s) + CO2(g)
85. What is the coefficient in front of C(s)?
A) 3
B) 4
C) 5
D) 6
E) none of these
86. This reaction can be described as a
A) synthesis
B) decomposition
C) single displacement
D) double displacement
E) none of these
---
Which of the following salts should be soluble in water? (Select all that apply)
A) iron (II) chloride
B) potassium sulfate
C) barium phosphate
D) aluminum oxide
E) strontium carbonate
Answer: A, B
Which of the following salts should be insoluble in water? (Select all that apply)
A) silver chloride
B) lead (