79.下列何組為緩衝溶液
(A)CH 3COOH+HCl
(B)CH 3COOH+CH3 COONa
(C)NH4 Cl+HCl
(D)NaOH+ HCl。

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統計： A(1), B(11), C(0), D(0), E(0) #2268379