下列事实中不能证明CH3COOH是弱电解质的是①常温下某CH

更新 2022-09-03
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下列事实中不能证明CH3COOH是弱电解质的是
①常温下某CH3COONa溶液的pH=8 ②用CH3COOH溶液做导电实验，灯泡很暗 ③等pH等体积的盐酸、CH3COOH溶液和足量锌反应，CH3COOH放出的氢气较多 ④0.1mol/L的CH3COOH溶液的pH=2.1 ⑤pH=1的CH3COOH溶液稀释100倍，pH＜3

A．②

B．②⑤

C．①③⑤

D．③④⑤

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