Question

Prakash took a solution of copper sulphate in a beaker and dropped a clean iron nail into it and left it for about an hour.
a. What changes do you observe?
b.Are these changes chemical in nature?
c.Write a word equation for the chemical change, if any.

Answer 1

Answer:

a The blue colour of the copper sulphate solutions gets faded and a brownish coat is formed on the iron nail

b Yes, these changes are chemical in nature

c Copper Sulphate solution when reacted with iron forms iron sulphate and copper since iron displaces copper from copper sulphate

CuSO4+Fe---->FeSO4+Cu

Hope it helps you!!!!!

Answer 2

Answer:

a. The clean iron nail will turn brownish in colour and the colour of copper sulphate solution will fade.

b. Yes these changes are chemical in nature.

c. CuSO4 + Fe = FeSO4 + Cu

*instead of that equal sign in the equation give an arrow sign