Which statement is correct when an iron nail is placed in copper sulphate solution?
Answer and explanation
Correct answer: Iron displaces copper from copper sulphate
Iron is more reactive than copper. Therefore, iron displaces copper from copper sulphate solution: \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). A reddish-brown coating of copper forms on the nail, and the blue solution turns pale green. In contrast, copper cannot displace iron from its salt because copper is less reactive.
Frequently asked questions
What is the correct answer to this question?
Iron displaces copper from copper sulphate
Why is this the correct answer?
Iron is more reactive than copper. Therefore, iron displaces copper from copper sulphate solution: \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). A reddish-brown coating of copper forms on the nail, and the blue solution turns pale green. In contrast, copper cannot displace iron from its salt because copper is less reactive.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
