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Complete the following (a) Zn + CuSO4 = (b) Fe2O3 + Al =

(a) In this case Zn metal will displace the lesser active copper from its salt.

     Zn(s) + CuSO₄(aq) => Cu(s) + ZnSO₄(aq)

      This is a single replacement reaction.

(b) Fe₂O₃ + 2Al => 2Fe + Al₂O₃