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82问答网 > 电解池,阳极是碳棒,阴极是铁,溶液是NaCl溶液 ,求两极的反应式

电解池,阳极是碳棒,阴极是铁,溶液是NaCl溶液 ,求两极的反应式

2025-03-27 04:43:42

推荐回答（1个）

回答1：

铁做阴极,受外电源保护,不参加反应
阳极带正电,阴离子靠近并且还原性Cl > OH 所以阳极：2Cl ----2e ===Cl2
阳极带负电,阳离子靠近并且氧化性H >Na (K、Na、Ca 等离子在电解中基本不得电子)
所以阴极：2H+ +2e ===H2

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