Q. 1004.1( 8 Votes )

A zinc plate was kept in a glass container having CuS04 Solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.

Answer :

Copper is less reactive then zinc. Some of the zinc metal of zinc plate dissolves and displaces copper from copper sulphate. This dissolving of zinc metal forms tony holes in zinc plate. Due to the formation of colorless zinc sulphate solution the blue colour of copper sulphate solution gets lighter and lighter.

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