Describe the possible components of a buffer solution. (Select all that apply.)

A. strong acid and its conjugate base

B. strong base and its conjugate acid

C. weak base only

D. weak base and its conjugate acid

F. weak acid only

G. weak acid and its conjugate base

H. strong acid and strong base

Both D and G options. Weak base and its conjugate acid or weak acid and its conjugate base are the possible components of a buffer solution.

Explanation:

Buffer solution is the solution which gets easily dissolved in water and so called as "Aqueous solution".

Buffer solution is essentially made up of two components Known as:

i.) Weak base and its conjugate acid

ii.) Weak acid and its conjugate base

This weak acid and base solution is used to maintain the pH value of the solution in a balanced way.

When the weak acid or base solution is added to strong acid or base solution that is the way pH gets balanced.

In one word buffer solution is the solution which resists for the pH change when strong acids or bases are added.