問題詳情
8. 在 Na3PO4的水溶液中,通入 HCl 氣體,當 pH=4 時,則溶液中何種粒子的濃度最大?(H3PO4之 Ka1=7.1×10-Ka2=6.3×10-Ka3=4.4×10-13)
(A) H2PO-
(B)
(C)
(D) H3PO4 。
(A) H2PO-
(B)

(C)

(D) H3PO4 。
參考答案
答案:A
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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