[".. 아민수는 기저이며,氯化铵是酸，将碱加入酸中，pH减小。
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选择题：在氨水中加入一些NH4Cl晶体，会使（ ）。 A、NH3水的解离常数增大 B、NH3水的解离度a增大C、溶液的pH值增大 D、溶液的pH值减少 答案：D 提示：能阐述出解题过程的给予额外奖励，答案回复可见
D。氨水属碱，氯化铵属酸，碱中加酸，PH减小。
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