Question

On immersing the brow coloured iron nails in blue coliured copper sulphate solution they display ..... From the copper sulphate solution and their colour becomes ..... Tgis is a reaction.....

Answer 1

On immersing the brown colored iron nails in blue colored copper sulphate solution they display a change in colour.From the copper sulphate solution their colour becomes greyish.This is a displacement reaction.

Answer 2

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed in the surface of iron and the colour of copper sulphate solution changes from blue to pale green. The reaction shows that iron is more reactive than copper because it displaces copper from the copper sulphate solution.