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对于氧化还原反应： 2MnO4—+10Cl—+16H+ 2Mn2++5Cl2+8H2O (1)试将反应拆分成两个电极反应，写出电池符号，并判断标准状态下此反应进行的方向。 (2)若c(H+)=0．0100mol．L—1，p(Cl2)=1000kPa，其他离子浓度为1．00mol．L—1，求此电池在298K时的电动势，并判断反应方向。 (3)求此反应的标准平衡常数。
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