問題詳情
18. You have 75.0 mL of 0.10 M HA. After adding 30.0 mL of 0.10 M NaOH, the pH of the HA-NaOH solution is 5.50. What isthe Ka value of HA?
(A)1.74 × 10-8
(B)2.1 × 10-6
(C)6.0 × 10-5
(D) 5.6 × 10-4
(E)6.6 × 10-7
(A)1.74 × 10-8
(B)2.1 × 10-6
(C)6.0 × 10-5
(D) 5.6 × 10-4
(E)6.6 × 10-7
參考答案
答案：B
難度：困難0.241379
統計：A(3),B(7),C(6),D(7),E(1)
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