Question

When iron nails are kept in copper sulphate solution for 30 minutes, the colour of solution changes to

Answer 1

the blue colour of cuso4 fades and turns white and iron nail becomes brown in colour. It is a displacement reaction

Answer 2

The ferrous sulphate crystals are light green in colour. The gas emitted has the characteristic odour of burning sulphur. On heating, the colour changes from light green to white. On further heating, the white substance changes to d