The common ion in an aqueous solution of a weak acid and a strong acid is the hydronium ion.

Question

Quizplus · Accepted Answer

The common ion in an aqueous solution of a weak acid and a strong acid is the hydronium ion, which is a common ion due to its presence in both acids. This is because the weak acid only partially dissociates in water, producing its conjugate base and hydronium ions, while the strong acid fully dissociates into hydronium and its corresponding anion in water. Therefore, the hydronium ion is common to both acidic solutions.

The Common Ion in an Aqueous Solution of a Weak