Show all Work on scrap paper. Answers on test must match the…

Show all Work on scrap paper. Answers on test must match the scrap paper. 50.0 mL of 0.20 M NH3 titrated with 0.25 M HCl (Kb = 1.8 x 10–5, pKb = 4.74) a) What is the pH of the solution at the start of the titration? b)after 18.0 mL of titrant have been added? c)at the equivalence point? d)at the half-equivalence point? e)after 50.0 mL of titrant have been added? Sketch the titration curve.