This is a titration of a weak base w/ a strong acid. So when you add the acid, it will dissociate into H+ and Cl- ions completely, but some of A- will consume the H+ and it will form HA. So this will in affect become a buffered solution. So i believe you can use henderson hasselbach for this equation. Solution This is a titration of a weak base w/ a strong acid. So when you add the acid, it will dissociate into H+ and Cl- ions completely, but some of A- will consume the H+ and it will form HA. So this will in affect become a buffered solution. So i believe you can use henderson hasselbach for this equation...