Question

A zinc plate was put into a solution of copper sulphate kept in a glass container. It was found that blue colour of the solution gets fader and fader with the passage of time. After a few days, when zinc plate was taken out of the solution, a number of holes were observed on it. (i) state the reason for changes observed on the zinc plate. (ii) write the chemical equation for the reaction involved.

Answer 1

i) Zinc is more reactive than copper. It displaces  Cu from CuSO4 and hence copper gets deposited on the zinc plate.

ii) Zn + CuSO4 → ZnSO4 + Cu