1.

Explain why blue colour of CuSO_(4) solution is discharged when Zn rod is dipped in it.

Answer»

SOLUTION :This is because Zn rod undergoes oxidation and the ELECTRONS lost are gained by `Cu^(2+)` ions forming copper solid.
`Zn+CuSO_(4)toZnSO_(4)+Cu`
THEREFORE concentration of `Cu^(2+)` ions goes on decreasing, .blue colour of `CuSO_(4)` solution is DISCHARGED.


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