3
QuizMultiple Choice

Lab: Measuring pH — Unit test

Question 3 • Foothill-B Period-Chemistry-26/27B

A strong acid, HA, is added to water. Which statement about the solution is true?

Answer
A
It contains mostly hydroxide ions.
B
It contains almost no hydronium ions.
C
It contains little or no HA.
D
It contains a low amount of ions.

Explanation

A strong acid ionizes almost completely in water: HA + H₂O → H₃O⁺ + A⁻. That leaves little or no un-ionized HA in the solution, so “It contains little or no HA” is true. The solution contains hydronium ions and other ions, not mostly hydroxide ions or a low amount of ions.

AI-written and checked against the verified answer.

Previous
Next