Question

One student was assigned in an experiment of reaction of iron nails with solution of copper sulphate change in colour of the iron nails the type of reaction

Answer 1

When the reaction of iron nails with solution of copper sulphate change in colour of the iron nails because it displacement reaction.

DISPLACEMENT REACTION : the reaction in which more reactive metal displace the less reactive is called displacement reaction.

Equation:

CuSO4 + Fe ---- FeSO4 + Cu
(blue) (black) (green) (reddish brown)

Fe is more reactive than copper because Fe displace the Cu.

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