Question

An iron piece is kept in a blue coloured solution.after some time the colour of the solution turns to green . explain the process with the help of a reaction and identify both the solutions

Answer 1

the the iron piece is kept in copper sulphate solution . copper sulphate solution is in blue colour .

as iron is more reactive than copper it displaces copper and forms ferrous sulphate which is green in colour and leaves copper residue on the the iron nail which is in reddish brown colour .

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