Question

What is the purpose of a buffer?

A. To limit pH changes in solution
B. To force the pH of a solution to change
C. To make a solution form a salt
O D. To neutralize the pH of a solution

Answer 1

A buffer is a solution that limits pH changes by absorbing excess H+ or OH- ions, thus maintaining a stable pH in biological and chemical systems.

Step-by-step explanation:

The purpose of a buffer is to limit pH changes in a solution. Buffers are often used in biochemical systems within the human body, such as the bicarbonate buffer system, to maintain a stable pH that is critical for the proper functioning of biological processes. By absorbing excess hydroxide ions (OH-) and hydrogen ions (H+), buffers can prevent significant shifts in pH when acidic or basic substances are introduced. For example, a common buffer system consists of a weak acid such as acetic acid (HC2H3O2) and its salt, sodium acetate (NaC2H3O2).

Answer 2

To limit pJ changes in solution