Which substance is displaced when an iron nail is placed in copper sulphate solution?
Answer and explanation
Correct answer: Copper
Iron is more reactive than copper. Therefore, iron displaces copper from copper sulphate solution, and copper gets deposited on the surface of the nail. The reaction is \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). Iron is not displaced; it takes the place of copper in copper sulphate.
Frequently asked questions
What is the correct answer to this question?
Copper
Why is this the correct answer?
Iron is more reactive than copper. Therefore, iron displaces copper from copper sulphate solution, and copper gets deposited on the surface of the nail. The reaction is \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). Iron is not displaced; it takes the place of copper in copper sulphate.
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.