Question

what happens if copper is put in the iron sulphate solution​

Answer 1

Copper is less reactive than iron that's why copper has no effect on ferrous sulphate solution. This means that since then the sign of is positive so the reaction is not feasible. ... Copper is less reactive than iron. It cannot displace iron (II) sulphate.

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Answer 2

When Iron in put in copper sulphate solution then iron displaces copper from it's salt solution because iron is more reactive then copper and iron sulphate will get formed and the copper will get diposited on the iron article.

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