For Which of the Following 0 $\times$ 10^-2,K_a2 = 1 $\times$ 10^-7
B)H₂B;K_a1 = 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;K_a1 = 4.2 \(\times\) 10^-2,K_a2 = 1.8 \(\times\) 10^-7
• B)H₂B;K_a1 = 2.4 \(\times\)10^-4,K_a2 = 6.1 \(\times\) 10^-8
• C)H₂C;K_a1 = 1.3 \(\times\) 10^-4,K_a2 = 5.2 \(\times\) 10^-9
• D)H₂D;K_a1 = 1.8 \(\times\) 10^-3,K_a2 = 9.3\(\times\) 10^-4
• E)The second dissociation never affects the pH significantly.

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