A buffer solution is a solution that only changes slightly when an acid or a base is added to it. For an acid-buffer solution, it consists of a week acid and its conjugate base. ... The added acid or base is neutralized.

What is in a buffer solution?

Buffers. A buffer is an aqueous solution containing a weak acid and its conjugate base or a weak base and its conjugate acid. A buffer's pH changes very little when a small amount of strong acid or base is added to it. It is used to prevent any change in the pH of a solution, regardless of solute.

Which one is a buffer solution?

Buffer solutions are obtained, when a weak acid is mixed with its conjugate base or a weak base is mixed with its conjugate acid. Hence, solution of acetic acid and sodium acetate is a Buffers solution.