Question

Select the statement that best describes a buffer.

a. A buffer maintains a constant pH when acids are added.
b. A buffer resists changes in pH by absorbing or releasing H+ ions.
c. A buffer reacts with bases to maintain a neutral pH.
d. A buffer has no impact on pH changes in a solution.

Answer 1

A buffer is a solution that resists sudden changes in pH. It maintains a relatively constant pH when an acid or a base is added.

Step-by-step explanation:

A buffer is a solution that resists sudden changes in pH. It maintains a relatively constant pH when an acid or a base is added. Buffers protect other molecules in solution from the effects of added acids or bases. They are critical for the proper functioning of biological systems, and every biological fluid is buffered to maintain its physiological pH.