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下列混合溶液属于缓冲溶液的有（）

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下列混合溶液属于缓冲溶液的有（）

A.NaOH和过量的NH4Cl

B.NaAc和HAc

C.过量的氨水和盐酸

D.等物质量的Na3PO4和NaH2PO4

E.KCl和HCl

参考答案:

答案：ABCD

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