Question

1. State whether a displacement reaction will occur if the following are mixed. Give reasons. Give
the reaction
a. copper sulphate and zinc
b. copper sulphate and iron
c. zinc sulphate and copper
d. zinc sulphate and iron
e. iron sulphate and zinc
f. iron sulphate and copper​

Answer 1

(a) Copper sulphate and Zinc: A displacement reaction will occur between copper sulphate and zinc because zinc is placed above copper in the reactivity series. Thus, it will replace copper.

Zn + CuSO4 --> ZnSO4 + Cu

(b) Copper sulphate and Iron: A displacement reaction will occur because iron is placed above copper. Thus, it will replace copper.

Fe + CuSO4 —> FeSO4 + Cu

(c) Zinc sulphate and copper: A displacement reaction will not occur here because copper is placed below zinc. Thus, it will not replace zinc.

(d) Zinc sulphate and iron: A displacement reaction will not occur here because iron is placed below zinc. Thus, it will not replace zinc.

(e) Iron sulphate and zinc: A displacement reaction will occur because zinc is placed above iron. Thus, it will replace iron.

Zn + FeSO4 —> ZnSO4 + Fe

(f) Iron sulphate and copper: A displacement reaction will not occur here because copper is placed below iron. Thus, it will not replace iron from iron sulphate.