下列叙述正确的是(    ) A.碱性锌锰干电池的负极材料为二氧

下列叙述正确的是   

A.碱性锌锰干电池的负极材料为二氧化锰

B.碱性氢氧燃料电池工作时负极反应为:H2-2e-+2OH-=2H2O

C.铅蓄电池放电时负极反应为:PbO2+2e-+4H+=Pb2+++2H2O

D.锌一铜一稀硫酸构成的原电池工作时,H+向负极移动

答案

B

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