7. Write the chemical equation in words, and then using chemical formulae, for the chemical change that occurs when iron nails are dipped in copper sulphate solution.
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When a nail contains iron metal is dipped in copper sulphate then the iron displaces the copper from copper sulphate and forms ferrous sulphate. -The reaction in the form of the word equation is as follows. Iron + Copper sulphate → Iron sulphate or ferrous sulphate + Copper.
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