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Which of the following is the strongest acid?
A)HNO2, Ka = 5.6 ? 10?4D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)NH4+, Ka = 5.6 ? 10?10
62. Which of the following is the strongest acid?
A)HOCl, Ka = 4.0 ? 10?8D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)NH4+, Ka = 5.6 ? 10?10
63. Given 0.10 M solutions of the following acids, which contains the highest concentration of H3O+?
A)HF, Ka = 6.3 ? 10?4D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)HOCl, Ka = 4.0 ? 10?8
64. Given 0.10 M solutions of the following acids, which contains the highest concentration of H3O+?
A)HNO2, Ka = 5.6 ? 10?4D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)NH4+, Ka = 5.6 ? 10?10
65. Given 0.10 M solutions of the following acids, which contains the lowest concentration of H3O+?
A)HF, Ka = 6.3 ? 10?4D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)HOCl, Ka = 4.0 ? 10?8
66. Which of the following ionizes to the greatest extent?
A)HF, Ka = 6.3 ? 10?4D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)HOCl, Ka = 4.0 ? 10?8
67. Which of the following ionizes to the greatest extent?
A)HNO2, Ka = 5.6 ? 10?4D)CH3CO2H, Ka = 1.8 ? 10?5
B)HCN, Ka = 6.2 ? 10?10E)HCO2H, Ka = 1.8 ? 10?4
C)NH4+, Ka = 5.6 ? 10?10
68. Rank the following 0.100 M solutions in order of increasing H3O+ concentration:
HOCl, Ka = 4.0 ? 10?8; HCN, Ka = 6.2 ? 10?10; NH4+, Ka = 5.6 ? 10?10
A)HOCl 4+D)HCN 4+
B)HOCl 4+ E)NH4+
C)HCN 4+
69. Rank the following 0.100 M solutions in order of increasing H3O+ concentration:
HF, Ka = 6.3 ? 10?4; HCN, Ka = 6.2 ? 10?10; HOCl, Ka = 4.0 ? 10?8
A)HF D)HOCl
B)HF E)HCN
C)HOCl
70. Rank the following 0.100 M solutions in order of increasing H3O+ concentration:
HCN, Ka = 6.2 ? 10?10; NH4+, Ka = 5.6 ? 10?10; CH3CO2H, Ka = 1.8 ? 10?5
A)HCN 4+ 3CO2HD)CH3CO2H 4+
B)NH4+ 3CO2HE)CH3CO2H 4+
C)HCN 3CO2H 4+
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