Question

what happens when an iron needle is dipped in a coper sulphate solution? class 7 very very long answer.​

Answer 1

Answer:

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.This video explains the chemical change occurs during the reaction of iron nails with copper sulphate solution.

Answer 2

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.When iron nail is dipped in the solution of copper sulphate, copper is displaced by iron and forms ferrous sulphate. Thus the blue colour of copper sulphate changes into green because of formation of ferrous sulphate.