Question

Iron nails are placed in copper sulphate solution for 2 hours. State your observations and write word equation in support of your answer.​

Answer 1

Answer:

→ The colour of the copper sulphate is blue.

→ When iron nails are placed in the copper sulphate solution, the colour of the solution changes into green colour.

→ Here, Fe is more reactive than Cu.

→ So, Fe displaces Cu to form iron sulphate and copper.

Fe + CuSO4 → FeSO4 + Cu

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Answer 2

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.