Question

the colour of the copper sulphate solution changes when a magnesium ribbon is added to it elucidate

Answer 1

When magnesium ribbon (Mg) is added in copper sulphate (CuSO4) solution it gives magnesium sulphate (MgSO4) solution and copper ( Cu) metal . Magnesium displaces Copper as it is more reactive than copper .This is a type of single displacement reaction .

The colour of solution is blue due to presence of copper sulphate and it is changes into white colour due to formation of magnesium sulphate.

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Answer 2

When magnesium is placed in copper sulfate solution a redox reaction occurs, causing copper metal to form on the magnesium and the deep blue colour of the solution pales.

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