Aluminium strip was placed in a solution of copper sulphate after an hour it was observed
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Al displaces copper from its salt solution and the solution of cuso4 turns from blue to colorless. And the layer of cu starts depositing on aluminium strip
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The displacement reaction takes place and colour of solution changes from blue to colourless and coating of copper is deposited on strip and it becomes reddish brown.
2Al+3CuSO4---->Al2(SO4)3+3Cu
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