Question

When an iron nail was added to a solution of copper sulphate the colour of the solution changed from blue to light green and a red coloured substance was deposited on the nail .However when silver was added to copper sulphate solution, then no change was observed in the colour of the solution. Explain.

Answer 1

Copper Sulphate Solution (CuSO4) is blue in colour. When iron nail is placed in it, we can observe the following:

1) reddish brown deposits on iron (these are of Copper)

2) colour of the solution turns from blue to light green.

The formula for this reaction is: Fe + CuSO4 --> FeSO4 + Cu

Here, Fe is more reactive than Cu. So Fe displaces Cu to form Iron Sulfate and Copper.

Hope it help you…….
Copper Sulphate Solution (CuSO4) is blue in colour. When iron nail is placed in it, we can observe the following:

1) reddish brown deposits on iron (these are of Copper)

2) colour of the solution turns from blue to light green.

The formula for this reaction is: Fe + CuSO4 --> FeSO4 + Cu

Here, Fe is more reactive than Cu. So Fe displaces Cu to form Iron Sulfate and Copper.

Hope it help you…….