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15 September, 11:59

When zinc pieces are are put in copper sulphate solution what happens?

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  1. 15 September, 13:33
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    Explanation -

    Zinc is more reactive than copper. So, by adding zinc to CuSO4 solution, zinc displaces copper from copper sulphate & forms zinc sulphate solution. This is indicated by colour change from blue to colourless. CuSO4 solution has a blue colour while ZnSO4 solution is colourless.

    Chemical equation -

    Zn (s) + CuSO4 (aq) - > Cu (s) + ZnSO4 (aq).

    Type of reaction -

    It's a displacement reaction.

    It's a redox reaction. Oxidation number of Cu decreases from 2 to 0 so it's reduced. Oxidation number of Zn increases from 0 to 2 so it's oxidised.
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