問題詳情

3. 將以下 0.10 M 的各個溶液,依 pH 值,從最低排到最高。NaF, NaC2H3O2, C5H5NHCl, KOH, HCN. (Ka HCN = 6.2 × 10–10; Ka HF= 7.2 × 10–4; Ka HC2H3O2 = 1.8× 10–5; Kb C5H5N = 1.7 × 10–9)
(A) KOH, NaC2H3O2, NaF, HCN, C5H5NHCl
(B) NaC2H3O2, NaF, HCN, KOH, C5H5NHCl
(C) HCN, C5H5NHCl, NaF, NaC2H3O2, KOH
(D) NaF, NaC2H3O2, HCN, C5H5NHCl, KOH
(E) C5H5NHCl, HCN, NaF, NaC2H3O2, KOH

參考答案

答案:E
難度:非常簡單1
統計:A(0),B(0),C(0),D(0),E(1)

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