Why does the colour of copper sulphate change when an iron nail is kept in it? Justify your answer.

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Blue colour of the copper sulphate solution changes into green colour & then iron nail acquires a brownish look. This is because that iron is more reactive than copper.
The following chemical reaction takes place in this activity.

F e + C u S O_{4} \to F e S O_{4} + C u

In this reaction, iron displaces copper from

C u S O_{4}

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Question Text	Why does the colour of copper sulphate change when an iron nail is kept in it? Justify your answer.
Answer Type	Text solution:1
Upvotes	150

Why does the colour of copper sulphate change when an iron nail is kept in it? Justify your answer.

Text solutionVerified

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