| A | B | C | D |
O | Zn | Ag | Cu | Cu |
ؓO | Cu | Cu | Zn | Zn |
늽|Һ | CuCl2 | H2SO4 | CuSO4 | FeCl2 |
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Ac늘OOl߀ԭ |
BBͨǼl |
C늕rO2-xdOƄ |
DdOϵ늘Oʽ飺CH44O2+8e=CO22H2O |
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| ԭ늳 | 늽 |
A | H+Pb늘O | H+Pb늘O |
B | ÿ3molPb | 2molAl2O3 |
C | OPbO2+4H++2e-=Pb2++2H2O | ꖘO2Al+3H2O-6e-=Al2O3+6H+ |
D | ![]() | ![]() |
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