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简答题 求下列电池的E,并指出正、负极,写出电极反应和电池反应。 (1)Pt|Fe2+(1mol•L-1),Fe3+(0.0001mol•L-1)‖I(0.0001mol•L-1|I2(s)|Pt (2)Zn|Zn2+(0.1mol•L-1)‖Cu2+(0.1mol•L-1)|Cu (3)Pt|H2(100kPa)|H+(0.001mol•L-1)‖H+(1mol•L-1)|H2(100kPa)|Pt (4)Zn|Zn2+(0.0001mol•L-1)‖Zn2+(0.01mol•L-1)|Zn
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