Question

V. Give reasons for the following statements :
1. Blue colour of copper sulphate changes when iron nail is added to it.​

Answer 1

Answer:

iron displace thecopper from its solution because iron is more reactive and strong metal than copper

Answer 2

When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.