what do you observe when an iron nail is placed in copper sulphate solution? what is the colour change
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When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.
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When an iron nail is dropped in copper sulphate solution,the colour of the solution will change to green from blue due to the formation of iron sulphate, a new substance . Also there will be a brown deposit on the iron nail. That is copper,another new substance. This change is called chemical change. The equation can be written as:-
CuSO4(copper sulphate)+Fe (iron)--->FeSO4(iron sulphate)+Cu(copper)
Explanation:
Answer is above
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