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【单选题】
关于铅蓄电池的说法正确的是:A.
在放电时,正极发生的反应是Pb(S)+SO42-(aq)=PbSO4(S)+2e-
B.
在放电时,该电池的负极材料是铅板
C.
在充电时,电池中硫酸的浓度不断变小
D.
在充电时,阳极发生的反应是PbSO4(s)+2e-=Pb(s)+SO42-(aq)
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