Question

Select the statements that correctly describe a buffer. a) An acid added to the buffer solution reacts with the weak base of the buffer. b) The pH of a buffer solution is determined by the ratio of the concentration of conjugate base to the concentration of strong acid. c) A buffer is generally made up of a weak acid and its conjugate base. d) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. e) The Ka of a buffer does not change when any amount of an acid is added to the buffer solution.

Answer 1

Answer:

• (B.) The pH of a buffer solution is determined by the ratio of the concentration of conjugate base to the concentration of strong acid.
• (C.) A buffer is generally made up of a weak acid and its conjugate base.
• (D.) The pH of a buffer solution does not change significantly when any amount of a strong acid is added.

Explanation:

A buffer is  solution which resists change in pH upon addition of either acids or bases.

The pH of a buffer is calculated by the ratio of the concentration  of base to concentration of acid. The weak acid and conjugate base have a Ka similar to the pH desired.