Question

. Write the colour of copper sulphate solution obtained when iron nails are dipped in it? (1)​

Answer 1

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.

Answer 2

Explanation:

green in colour

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