what happens when a piece of iron metal is placed in copper sulphate solution ? Name the type reaction involved ?

CuSO₄ + Fe --------> FeSO₄ + Cu

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When iron metal placed in copper sulphate solution, iron displaces copper from copper sulphate solution which is blue in colour to from iron sulphate solution which is green in colour and copper metal ( reddish deposit formed on iron metal) . Iron displaces copper because iron is more reactive then copper

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The type of reaction involved is displacement reaction