Question

Name a non-metal which is kept in water. What happen when iron nails are placed in copper sulphate solution? Write word equation.​

Answer 1

Answer:

1. sodium
2. displacement reaction

Explanation:

sodium can catch fire hence to prevent the fire its kept immersed in kerosene

iron displaces copper from its compounds and hence displacement reaction occurs

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Answer 2

Answer:

Phosphorus is the non-metal which is kept in water because it is highly reactive non-metal (if comes in contact with air starts burning).

When Iron nails are placed in copper sulphate solution then it has a thin coating of copper in its surface which is brown in colour and the colour of iron nails changes to green.

Reaction :- Fe + Cu2 = Fe2 + Cu