問題詳情
32. 一溶液中 CN－及 CH3COO－的莫耳濃度相同。加過氯酸於此溶液中直至 H＋莫耳濃度 10－4M，下列各項關係式，何者正確？(HCN 之 Ka＝4×10－10；CH3COOH之 Ka＝1.8×10－5)
(A) [CN－]＝[CH3COO－]
(B) [CH3COOH]＞[HCN]
(C) [CH3COO－]＜[CN－]
(D)
(E)
參考答案
答案：D,E
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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