The solutions that contain a common ion with the equilibrium solution are MgSO4 and HNO3.
What is the common ion effect?
The common ion effect refers to the decrease in solubility of an ionic precipitate when a soluble compound with an ion in common with the precipitate
is added to the solution.
In the equilibrium equation shown, the ions present are SO4^2- and H+ ions.
The solutions that contain a common ion with the equilibrium solution is MgSO4 and HNO3.
MgSO4 contains SO4^2- ions.
HNO3 contains H+ ions.
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