Question

why does the colour of copper sulphate solution change when iron pieces are added to it​

Answer 1

Blue colour of the copper sulphate solution changes into green colour & then iron nail acquires a brownish look. This is because that iron is more reactive than copper. The following chemical reaction takes place in this activity. In this reaction, iron displaces copper from CuSO4 solution.

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Answer 2

Answer:it is changes to from blue into green .This is because iron is more reactive than copper.The following

chemical reaction takes place in this activity .In this reaction,iron displaces copper from CuSO4 solution

Explanation: