钢铁在潮湿的空气中被腐蚀,发生的原电池的反应为2Fe+2H2O+O2=2Fe2++4OH

钢铁在潮湿的空气中被腐蚀,发生的原电池的反应为2Fe+2H2O+O2=2Fe2++4OH-,下列说法正确的是(   )

A.原电池是将化学能间接转化为电能的装置

B.正极发生的反应为2H2O+O2—4e-=4OH-

C.负极发生的反应为Fe—2e-=Fe2+

D.钢柱在水下部分比在空气与水交界处更易腐蚀

答案

C

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