8. A 50.0 mL solution of 0.100 mol L´¹ lactic acid (HC3H5O3) is titrated with 0.100 mol L-¹ NaOH. For lactic acid, Ka = 1.4 x 104. Calculate the following: a)

the volume of NaOH titrant required to reach the equivalence point. b) the initial pH of the lactic acid solution. c) the pH at one-half the equivalence point. d) the pH at the equivalence point.