Question

Write the balanced equation for the preparation of the following salt in the laboratory:

A soluble sulphate by the action of an acid on an insoluble base.

Answer 1

\[\ce{MgCO3 + H2SO4 ⟶ MgSO4 + H2O + CO2}\]

Answer 2

\[\ce{\underset{insoluble}{FeO} + \underset{base acid}{H2SO4}-> \underset{soluble salt}{FeSO4} + H2O}\]