Question

Zinc can displace ______ from CuSO₄ solution, but cannot displace ______ from MgSO₄ solution.

Answer 1

Zinc can displace copper from CuSO₄ solution, but cannot displace magnesium from MgSO₄ solution.

Explanation:

In the electrochemical series, zinc lies above copper, so it can displace copper from its salt solution.

\[\ce{Zn + CuSO4 −> ZnSO4 + Cu}\]

However, magnesium is above zinc in the series, so zinc cannot displace magnesium from MgSO₄.