How are acids and protons related?

Question

A. Acids are substances that contain fewer protons than bases
B. An acid can donate protons to a base when they react
C. Acids are substances that contain more protons than bases
D. An acid can accept a proton from a base when they react

Answer 1

The correct answer is: B. An acid can donate protons to a base when they react.

In the Brønsted-Lowry theory of acids and bases, an acid is defined as a substance that can donate a proton (H⁺) to a base, which is defined as a substance that can accept a proton. Therefore, this choice correctly describes the relationship between acids and protons.