BUFFER SOLUTION:   

                                    A buffer solution ( more ion preacisly, PH buffer or hydrogen ion buffer) is an aqueaous solution consisting and its conjugate base, or vice versa.

Small or moderate amount of strong acid or based is added to it and thus it is used to prevent changes in the PH of a solution.

USES:

            Buffer solution are used as a means keeping PH at a nearly constant value in a wide variety of chemical applications. Many life forms thrive only in a relatively small byffer solution to maintain a constant PH. In nature, the bicarbonate buffering system is used to regulate the PH of blood.