weak base - strong acid titration

Question

how does the concentration of OH-, H+, HB and B- change as a weak base is titrated with a strong acid.

Answer 1

The concentration of OH^- will decrease as acid is added (slowly at first, rapidly through the equivalence point, and finally lining out at a low value.

The H⁺ concentration will increase slowly as acid is added, then increase rapidly through the equivalence point, then line out at a relatively high value

The B concentration will decrease as acid is added, and become very low at the end of the titration.

The BH⁺ concentration will increase as acid is added, and become relatively high at the end of the titration.