What changes in colour of iron nails and copper sulphate solutions do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
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100
When iron nail ferrum is dipped in copper sulphate CuSO4 there takes reaction between them and coppersulphate change its color from blue to light green. This shows iron is more reactive than copper it can replace copper from CuSO4.
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52
when iron nail is dipped in copper sulphate solution for 30 minutes ,then copper sulphate's colour blue change in light green colour . This show iron is more reactive than copper
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