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CHM 112

Practice Problems – Complete and Balance

Acid/Base

1. NaOH(aq) + H2SO4(aq)

2. Co(OH)2(s) + HCl(aq)

3. Mn(OH)2(s) + HClO4(aq)

4. KNO2(aq) + H2O(l)

5. CsF(aq) + HNO3(aq)

6. H3BO3(aq) + H2O(l)

7. CH3NH2(aq) + H2O(l)

8. Ni(NO3)2(aq) + H2O(l)

9. CoCl2(aq) + H2O(l)

10. Al(OH)3(s) + HI(aq)

11. HCl(aq) + H2O(l)

12. HNO3(aq) + Ca(OH)2(aq)

13. NH3(aq) + HBr(aq)

14. HC2H3O2(aq) + RbOH(aq)

15. Ba(OH)2(s) + HCN(aq)

16. H2S(aq) + NaOH(aq)

17. CsOH(aq) + NH4Cl(aq)

18. HClO4(aq) + CH3NH2(aq)

19. C5H5N(aq) + H2O(l)

20. C5H5N(aq) + HCl(aq)

Precipitation

21. NiCl2(aq) + CuNO3(aq)

22. Pb(OH)2(s) + H2SO4(aq)

23. AgNO3(aq) + HCl(aq)

24. H3PO4(aq) + CaI2(aq)

25. NaF(aq) + Ba(NO3)2(aq)

26. H2S(aq) + CoBr2(aq)

27. Ca(OH)2(aq) + NiSO4(aq)

28. Mn(NO3)2(aq) + Na2CO3(aq)

29. Pb(NO3)2(aq) + KI(aq)

30. MgBr2(aq) + Na3AsO4(aq)

31. ZnCl2(aq) + K2S(aq)

32. HF(aq) + Ca(OH)2(aq)

33. Sr(NO3)2(aq) + K2CrO4(aq)

34. H2C2O4(aq) + MgCl2(aq)

35. AgNO3(aq) + NaC2H3O2(aq)

36. FeCl2(aq) + NaOH(aq)

37. Rb2CO3(aq) + Ca(NO3)2(aq)

38. H2S(aq) + ZnBr2(aq)

39. Cd(ClO4)2(aq) + Na2C2O4(aq)

40. Na2CrO4(aq) + Pb(C2H3O2)2(aq)

Complex Ion Formation

41. AgNO3(aq) + NaCN(aq)

42. CuCl2(aq) + NH3(aq)

43. NiSO4(aq) + NH3(aq)

44. AgCl(s) + NH3(aq)

45. Fe(NO3)3(aq) + KCN(aq)

46. ZnSO4(aq) + NH3(aq)

47. CdI2(aq) + NH3(aq)

48. Cu(NO3)2(aq) + RbCN(aq)

49. AgNO3(aq) + Na2S2O3(aq)

50. ZnSO4(aq) + KOH(aq)

Oxidation–Reduction

51. HNO3(aq) + HI(aq) NO(g) + I2(s)

52. Zn(s) + Cu(NO3)2(aq) Zn2+(aq) + Cu(s) + NO3(aq)

53. MnO4(aq) + Br(aq) Mn2+(aq) + Br2(l) (pH = 1)

54. Cr2O72–(aq) + Cl(aq) Cr3+(aq) + Cl2(g) (pH = 1)

55. H2(g) + Zn(NO3)2(aq) NO(g) + Zn2+(aq) (pH = 1)

56. NaClO(aq) + Zn(s) Zn(OH)2(s) + Cl(aq) + Na+(aq)

57. MgI2(aq) + Ag2CrO4(s) I2(s) + Ag(s) + Mg2+(aq) + CrO42–(aq) (pH = 14)

58. CoCl2(aq) + Cd(s) Cd2+(aq) + Co(s) + Cl(aq)

59. AgCl(s) + H2C2O4(aq) Ag(s) + CO2(g) + Cl(aq)

60. Fe(CN)63–(aq) + N2H5+(aq) Fe(CN)64–(aq) + N2(g) (pH = 1)

61. ClO3(aq) ClO4(aq) + ClO2(aq) (pH = 14)

62. F2(g) + Fe(s) FeF3(s)

63. Li(s) + Sn4+(aq) Li+(aq) + Sn(s)

64. O3(g) + Cu(s) Cu2+(aq) + O2(g) (pH = 1)

65. S2O82–(aq) + Cr(s) Cr3+(aq) + SO42–(aq) (pH = 1)

66. H2O2(aq) + Mn2+(aq) MnO4(aq) + H2O(l) (pH = 1)

67. MnO4(aq) + H2C2O4(aq) Mn2+(aq) + CO2(g)

68. Ce4+(aq) + Cu+(aq) Ce3+(aq) + Cu2+(aq)

69. Co3+(aq) + Hg(l) Co2+(aq) + Hg22+(aq) (pH = 1)

70. ClO2(aq) + Fe(s) Fe(OH)3(s) + ClO(aq)

You decide

71. HF(aq) + Mg(OH)2(s)

72. NaCl(aq) + Hg2(NO3)2(aq)

73. C6H5NH2(aq) + H2O(l)

74. MnCl2(aq) + H2O(l)

75. K(s) + SnCl2(aq) K+(aq) + Sn(s) + Cl(aq) (pH = 1)

76. H2SO4(aq) + BaBr2(aq)

77. Ca(C2H3O2)2(aq) + H2O(l)

78. NH4ClO4(aq) + CsOH(aq)

79. H2SO3(aq) + H2O(l)

80. Mg(ClO4)2(aq) + Rb2CO3(aq)

81. H3AsO4(aq) + Pb2+(aq)

82. LiNO2(aq) + H2O(l)

83. H2O2(aq) + Al(s) Al3+(aq) + H2O(l) (pH = 1)

84. HCN(aq) + Sr(OH)2(s)

85. Ni(NO3)2(aq) + NaCN(aq)

86. HF(aq) + NH3(aq)

87. PbO2(s) + Pb(s) PbSO4(s) (pH = 1, sulfuric acid)

88. AgBr(s) + NH3(aq)

89. NaHSO4(aq) + Sr(NO3)2(aq)

90. Ca(s) + CrO42–(aq) Cr(OH)3(s) + Ca2+(aq)

91. NH2CH2CH2NH2(aq) + H2O(l)

92. C6H5OH(aq) + H2O(l)

93. FeCl3(aq) + H2S(aq)

94. HC7H5O2(aq) + CsOH(aq)

95. MnO4(aq) + Cr3+(aq) Mn2+(aq) + Cr2O72–(aq) (pH = 1)

96. NH2CONH2(aq) + H2O(l)

97. NH2OH(aq) + H3AsO4(aq)

98. AgNO3(aq) + NaC2H3O2(aq)

99. Ca(ClO4)2(aq) + H2C2O4(aq)

100. C6H5OH(aq) + H2O(l)