Question

When a piece of Zinc is added to a solution of copper sulphate, a displacement
reaction occurs. What is the symbol equation for this chemical reaction?
a) CuSO4+Zn ZnSO4+Cu.
b) ZnSO4+Cu CuSO4+Zn.
c) CuSO4+Zn Zn+SO4+Cu.
d) Cu+SO4+Zn ZnSO4+Cu.

Answer 1

Answer:

Zn

(s)

+CuSO

4

(aq.)

⟶ZnSO

4

(aq.)

+Cu

(s)

In the above reaction, Zn is added to the solution of copper sulphate and displaces copper metal.

Hence the above reaction is an example of displacement reaction.

Answer 2

Answer:

uSO4 (aq) + Zn (s) → Cu (s) + ZnSO4 (aq) is an example of displacement reaction.

A displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.

In the above reaction, Zn is added to the solution of copper sulphate and Zn displaces Cu from its salt solution. This is because zinc is a more reactive metal that displaces less reactive metal from its solution.

This is indicated by a colour change from blue to colourless.

CuSO4 solution has a blue colour while ZnSO4 solution is colourless.

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