Question

what changes in the colour of iron nails and copper sulphate solution? do you observe when iron nails are kept in copper sulfate solution for 20 30 minutes
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Answer 1

Answer:

Initially copper sulphate solution is blue in colour. When an iron nail is dipped into it for 30 minutes, brown copper gets deposited over the iron nail and the solution turns to green due to formation of ferrous sulphate.