1.

What colour changes do you observe when : (i) you add Zn to a solution of copper sulphate ? (ii) you add Pb to a solution of cupric chloride ? Write balanced equations.

Answer»

Solution :(i) BLUE colour of COPPER sulphate disappears.
`ZN(s)+CuSO_(4)(aq) to ZnSO_(4)(aq)+Cu(s)`
(ii) Green colour of cupric chloride disappears.
`Pb(s)+CuCl_(2)(aq)toPbSl_(2)(aq)+Cu(s)`


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