In a solution of a strong monoprotic acid in water, the hydrogen-ion concentration is approximately equal to the molarity of the acid.

Question

Quizplus · Accepted Answer

This statement is true. In a solution of a strong monoprotic acid (such as hydrochloric acid or nitric acid) in water, the acid completely dissociates into its ions, creating an equal concentration of hydrogen ions (H+) and the conjugate base anions. The molarity of the acid will therefore be equal to the hydrogen-ion concentration (in moles per liter).

In a Solution of a Strong Monoprotic Acid in Water