Question

a zinc plate was put into a solution of copper sulphate kept in a glass container. It was found that blue colour of solution gets fader and fader with the passage of time. After few days when zinc plate was taken out of solution, a number of holes were observed on it. 1) state the reason for the change observed on the zinc plate. 2) write the chemical equation for the reaction involved. 3) name another element which will show same observation. Justify with equation

Answer 1

1.The zinc plate is eaten away as it reacts with sulphate ions.This is because zinc is more reactive than copper thus it displaces copper ions in solution

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

3.Sodium

2Na(s)+CuSO4(aq)->Na2SO4(aq)+Cu(s)

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