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Copper from copper sulphate solution can be displaced by ………….The standared reduction potentials of some electrodes are given below: E^@(Fe^(2+),Fe) =-0.44V E^@(Zn^(2+),Zn)=-0.76 V E^@(Cu^(2+),Cu) =+0.34V E^@(Cr^(3+),Cr)=-0.74V E^@(H^+,1/2 H_2)=-0.00 V |
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Answer» `H_2` |
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