Question

Why does the colour of copper sulphate change when an iron nail is dipped in it

Answer 1

Answer:

BECAUSE IRON IS MORE REACTIVE THAN COPPER

HARE IS REACTION

FE+CUS04 (GREEN)=FESO4(BROWN COLOUR)+ CU

Actually colour 9f copper is blue and is displaced by iron and IRON COLUR IS BROWN HENCE COLOUR CHANGE

Explanation:

Answer 2

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When an iron nail dipped in the copper sulphate solution than iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the colour of the copper sulphate solution changes.

The reaction involved here is:

Fe (s) + CuSO4 (aq) → FeSO4 (aq) + Cu (s)