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【单选题】
有人设计出利用CH 4 和O 2 的反应，用铂电极在KOH溶液中构成原电池．电池的总反应类似于CH 4 在O 2 中燃烧，则下列说法正确的是（ ） ①每消耗1molCH 4 可以向外电路提供8mole - ②负极上CH 4 失去电子，电极反应式CH 4 +10OH - -8e - =CO 3 2- +7H 2 O ③负极上是O 2 获得电子，电极反应式为 O 2 +2H 2 O+4e - =4OH - ④电池放电后，溶液pH不断升高．A.
①②
B.
①③
C.
①④
D.
③④
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