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For Which of the Following 0 ×\times 10-2,Ka2 = 1 ×\times 10-7
B)H2B;Ka1 = 2

Question 130

Multiple Choice

For which of the following 0.10 M diprotic acids would the second dissociation affect the pH significantly?


A) H2A;Ka1 = 4.2 ×\times 10-2,Ka2 = 1.8 ×\times 10-7
B) H2B;Ka1 = 2.4 ×\times 10-4,Ka2 = 6.1 ×\times 10-8
C) H2C;Ka1 = 1.3 ×\times 10-4,Ka2 = 5.2 ×\times 10-9
D) H2D;Ka1 = 1.8 ×\times 10-3,Ka2 = 9.3 ×\times 10-4
E) The second dissociation never affects the pH significantly.

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