1.

Can you store copper sulphate solutions in a zinc pot ?

Answer»

SOLUTION :`E_(Zn^(2+)//Zn)^(@) = -0.76 V, E_(Cu^(2+)//Cu)^(@) = 0.34` V
To check whether ZINC reacts with `CuSO_4` solution, we SHALL see whether the following reaction takes place or not:
`Zn(s) + CuSO_(4)(aq) to ZnSO_(4)(aq) + Cu(s)`
The cell may be represented as: `Zn| Zn^(2+) || Cu^(2+) | Cu`
`E_("cell")^(@) = E_(Cu^(2+)//Cu)^(@) -E_(Zn^(2+)//Zn)^(@) = 0.34 V -(-0.76 V) = 1.10 V`
As `E_("cell")^(@)` is positive, the reaction takes place and we cannot store COPPER sulphate solution in zinc pot.


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