When an iron nail is placed in copper sulphate solution, the solution changes colour and copper is deposited. What type of chemical reaction is this?
Answer and explanation
Correct answer: Displacement reaction
Iron is more reactive than copper, so it displaces copper from copper sulphate solution. The reaction is \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). Since a more reactive element replaces a less reactive element from its compound, this is a displacement reaction. In a double displacement reaction, ions from two compounds exchange partners, which does not occur here.
Frequently asked questions
What is the correct answer to this question?
Displacement reaction
Why is this the correct answer?
Iron is more reactive than copper, so it displaces copper from copper sulphate solution. The reaction is \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). Since a more reactive element replaces a less reactive element from its compound, this is a displacement reaction. In a double displacement reaction, ions from two compounds exchange partners, which does not occur here.
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.
