22. 下列五種化合物之 0.10 M 水溶液,其 pH 值由低到高的順序,下列..-阿摩線上測驗
22. 下列五種化合物之 0.10 M 水溶液,其 pH 值由低到高的順序,下列何者正確?
(HCN: Ka = 6.2 × 10–10; HF: Ka = 7.2 × 10–4; HC2H3O2: Ka = 1.8 × 10–5; C5H5N: Kb = 1.7 × 10–9)
(A) C5H5NHCl < HCN < NaC2H3O2 < NaF < KOH
(B) C5H5NHCl < HCN < NaF < NaC2H3O2 < KOH
(C) KOH < NaC2H3O2 < NaF < HCN < C5H5NHCl
(D) HCN < C5H5NHCl < NaF < NaC2H3O2 < KOH
(E) NaF < NaC2H3O2 < HCN < C5H5NHCl < KOH
2F
|
4F
|