阿摩線上測驗
41 下列哪一對物質的組合會得到 pH 值為 5.05 的緩衝溶液？假設每一對物質溶解在 5.0 升 水中。(NH3 的 Kb = 1.8 × 10–5 ; C5H5N 的 Kb = 1.7 × 10–9 )
(A) 1.0 mol NH3 and 1.5 mol NH4Cl
(B) 1.5 mol NH3 and 1.0 mol NH4Cl
(C) 1.0 mol C5H5N and 1.5 mol C5H5NHCl
(D) 1.5 mol C5H5N and 1.0 mol C5H5NHCl
(E) 1.5 mol C5H5N and 1.5 mol C5H5NHCl
(A) 1.0 mol NH3 and 1.5 mol NH4Cl
(B) 1.5 mol NH3 and 1.0 mol NH4Cl
(C) 1.0 mol C5H5N and 1.5 mol C5H5NHCl
(D) 1.5 mol C5H5N and 1.0 mol C5H5NHCl
(E) 1.5 mol C5H5N and 1.5 mol C5H5NHCl
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統計： A(8), B(10), C(34), D(12), E(3) #1820064
統計： A(8), B(10), C(34), D(12), E(3) #1820064
