Question

Why do the colour & solution of copper sulphate change when we take a solution of copper sulphate in a beaker and put an iron nail in it?

Answer 1

Answer:

Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. ... Thus iron is more reactive than copper. In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper.

Answer 2

Answer:

The colour and solution of copper sulphate change because of the following displacement reaction that takes place-

CuSO4 + Fe = Fe2(SO4)3 + Cu

Since ,Iron is more reactie then cooler, iron displaces copper and this the copper sulphate solution in the beaker fades.