Chemistry
Senior High
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鉛蓄電池ってなんで放電したら負極も正極も質量増えるんですか?

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✨ Best Answer ✨

負極:Pb + SO4²− → PbSO4+ 2e−
正極:PbO2 +4H+ SO4²− +2e− → PbSO4 + 2H2O

Pb、PbO2ともに溶けず、どちらもPbSO4(硫酸亜鉛)という物質ができるので、質量が増えます。

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