When an iron nail is placed in a blue copper sulphate solution, which substance is formed in the solution?
Answer and explanation
Correct answer: Iron sulphate
Iron is more reactive than copper, so it displaces copper from copper sulphate solution. The reaction is: \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). Therefore, iron sulphate is formed in the solution and copper is deposited on the nail. Zinc sulphate cannot form because zinc is not present in the reaction.
Frequently asked questions
What is the correct answer to this question?
Iron sulphate
Why is this the correct answer?
Iron is more reactive than copper, so it displaces copper from copper sulphate solution. The reaction is: \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). Therefore, iron sulphate is formed in the solution and copper is deposited on the nail. Zinc sulphate cannot form because zinc is not present in the reaction.
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.
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