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85问答库 > 向ph为3的醋酸中加入等体积ph=3的硫酸.混合后溶液ph为什么变大

向ph为3的醋酸中加入等体积ph=3的硫酸.混合后溶液ph为什么变大

2025-03-25 00:29:04

推荐回答（1个）

回答1：

等PH值的醋酸和硫酸溶液，醋酸溶液的浓度要远大于硫酸溶液的浓度。那么硫酸溶液水的浓度一定大于醋酸溶液水的浓度。这样两者混合，就相当于醋酸溶液被稀释，当然混合醋酸溶液的PH值会变大，导致混合溶液的PH值变大。虽然溶液稀释后，醋酸的电离度增大，但远不及醋酸被稀释对溶液PH作用的的影响。

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