单项选择题
下列电池中,充放电反应不可逆的是( )
A.Zn(s)|CuSO4(a)|Cu(s)
B.Pb(s)|H2SO4(aq)|PbO2(s)
C.Zn(s)|Zn2+(a1)‖I-(a2)|I2(Pt)
D.Zn(s)|Zn2+(a1)‖H+(a2)|H2(p)|Pt
A.Zn(s)|CuSO4(a)|Cu(s)B.Pb(s)|H2SO4(aq)|PbO2(s)
C.Zn(s)|Zn2+(a1)‖I-(a2)|I2(Pt)
D.Zn(s)|Zn2+(a1)‖H+(a2)|H2(p)
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