Which is the common ion when hydrochloric acid is added to a saturated solution of sodium chloride?

Question

Quizplus · Accepted Answer

Hydrochloric acid (HCl) dissociates into hydrogen ions (H+) and chloride ions (Cl-) when it is added to a solution. However, since the solution is already saturated with sodium ions (Na+) and chloride ions (Cl-), the common ion is chloride ion (Cl-). This is because when the HCl dissociates, it adds more Cl- ions to the solution, which does not change the amount of chloride ions already present. In other words, the chloride ion is already a common ion in the saturated solution, and adding more chloride ions does not change the equilibrium.

Which Is the Common Ion When Hydrochloric Acid Is Added