Question

With the help of an activity prove that the reaction between copper sulphate and iron is a  

        Chemical change. (5M)​

Answer 1

Explanation:

Answer of this question is:

Colour of copper sulphate solution is green, When we add iron nail or any other material made up of iron it becomes iron sulphate solution. Colour of iron sulphate solution is blue. And we cannot convert iron sulphate solution to again copper sulphate solution that's why it is a chemical reaction or chemical change.

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Answer 2

Fe (s) + CuSO4 (aq) → FeSO 4 (aq) +Cu (s)

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 reaction shows that iron is more reactive than copper as it displaces copper from its solution and iron passes into solution as Fe

2+

ions and ferrous sulphate solution is formed.