Question

why do the colour and solution of copper sulphate change when we take a solution of copper sulphate in a beaker and put an iron nail in it​

Answer 1

Explanation:

iron is more reactive than copper

somit displaces copper from its solution

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Answer 2

Answer:

displacement reaction takes place .

Explanation:

as the reactivity of iron is more than copper therefore iron displaces copper from its solution forming iron sulphate and changing the colour of the solution pale green from blue with brownish red deposit over iron nail.