Question

Why does the colour of copper sulphate solution change when an iron nail is dipped in it ?​

Answer 1

Answer:

CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)

In this reaction following two processes take place:

Cu²⁺ + 2e = Cu⁰ (re­duc­tion process, Cu²⁺ is the ox­i­dizing agent)

Fe⁰ – 2e = Fe²⁺ (ox­i­da­tion process, Fe⁰ is the re­duc­ing agent)

The reaction can be double displacement reaction as well as redox reaction (oxidation and reduction both takes place simultaneously).

Explanation:

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. The iron passes into the solution as Fe (II) forming the ferrous sulphate solution.

Hope it will be helpful for you

Answer 2

Answer:

hi

Explanation:

The colour of copper sulphate solution change when an iron nail is dipped in it because The Iron is more reactive then copper so it reacts with copper sulfate solutions and make it farus sulfate

and the copper to cling on the Iron nail and the colour of copper sulphate solution is blue and it changes in green colour