Question

In a chemistry expiment a student by mistake put some magnesium strips in a blue coloured copper sulphate solution. What change will he observe in the solution? Write the reaction also

Answer 1

The solution will turn white from blue because Magnesium, being higher in the metal reactivity series, is more reactive than copper, so it displaces copper from its salt solution.

The reaction is
CuSO4 + Mg --------> MgSO4 + Cu
CuSO4 solution which was blue will turn colourless due to formation of MgSO4.

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Answer 2

Magnesium will react with blue coloured copper sulphate solution to form Magnesium sulphate and copper metal.
Blue colour of Copper sulphate will be discharged and golden brown coloured copper metal is obtained as precipitates