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慕言丶

金虫 (小有名气)

[求助] 氢气电极(Pt)在碱性溶液中的电极反应,急求

2OH- +2H2 -2e ==2H2O.算这个电极电势时,标准电极为什么是拿0来算?这个反应不就是OH- + H+===H20(氢气失去电子变成氢离子在碱性溶液中生成水) 吗?为什么都说是2H+ +2e== H2?  不是氢气通入吗?怎么又生成氢气了?
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