Question

State True or False.

Zn is precipitated by the addition of Cu powder in solution of ZnSO${}_4$.

• A. True
• B. False

Answer 1

The correct option is B False

$Z{n}^{2+}+2e^{-}\to Zn$ $\Rightarrow -0.76$

$C{u}^{2+}+2e^{-}\to Cu$ $\Rightarrow +0.34$

From their reduction potential, it can be seen that, as reduction potential of Cu is higher than that of Zn. So it has higher tendency to reduce and it can not precipitate Zn from solution.