A chemical buffer system consists of a pair of substances involved in a reversible reaction, one that can yield free H⁺ and one that can bind with free H⁺.

Question

Quizplus · Accepted Answer

This statement is true. A chemical buffer system involves a pair of substances—one that can donate hydrogen ions (protons) when the pH is too high (i.e., when there are too many hydroxide ions, OH⁻, present) and one that can accept hydrogen ions when the pH is too low (i.e., when there are too many hydrogen ions, H⁺, present). The goal is to maintain a relatively stable pH within a narrow range, which is critical for many biochemical processes.

A Chemical Buffer System Consists of a Pair of Substances