好吧问答库 > 高中化学燃料电池正负极反应式中的反应离子怎么找的

高中化学燃料电池正负极反应式中的反应离子怎么找的

2025年04月08日 08:39
有1个网友回答
网友（1）：

比如甲醛燃料电池的总之就等于是甲醛的燃烧的氧化还原反应，2CH3OH+3O2=燃烧=2CO2+4H2O。然后把它拆成氧化（负极），和还原（正极），同时注意生成物与电解液的负，碱性条件总反应2CH3OH+3O2+4OH-=2CO32-+6H2O，　负极是失电子氧化反应：CH3OH- 6e-+8OH-=CO32-+6H2O，正极：O2+4e-+2H2O=4OH-，，酸性条件总反应2CH3OH+3O2=2CO2+4H2O　，正极O2 + 4e-+4H+=2H2O，负极CH4O-6e-+H2O = CO2+6H+

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