阿Q吧 > 常温下水的电离程度，要过程

常温下水的电离程度，要过程

2025-04-03 15:52:49
推荐回答（1个）
回答1：

H2O=OH-+H+
常温时，水的离子积=1×10^－14 pH＝7。
即H+和OH－浓度均为1×10^-7mol/L。
1L水物质的量是1000g÷18g/mol=55.6mol，
水的电离度=1×10^-7÷55.6×100%=1.8×10^－7%

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