Question

how are acids and protons related? (1 point)
acids are substances that contain more protons than bases.
acids are substances that contain fewer protons than bases.
an acid can accept a proton from a base when they react.
an acid can donate protons to a base when they react.

Explanation:

According to the Brønsted - Lowry acid - base theory, acids are proton - donors in acid - base reactions. Bases are proton - acceptors. The comparison of the number of protons in acids and bases is not the correct way to define their relationship.

Answer:

An acid can donate protons to a base when they react.