Buffers may be defined as the solution of a weak acid with ithe conjugate base or a weak base with the conjugate acid. Buffers are not affected by the the additions of strong acid or base in a solution.
Whenever a strong base or acid is added to the buffer, it may release or binds with the hydrogen ion and maintains the pH of a body fluid. Blood has a buffer of carbonate ions and bicarbonic acids that maintains the blood pH.
