A solution of ethyl acetate and sodium hydroxide was prepared at t=0 at 5*10-3 mol/L ethyl acetate and 8*10-3 mol/L of sodium hydroxide. After 400 second at 25 deg.c, 25ml of aliquot was found to neutralize 33.3ml of 5*10-3 mol/L of HCl.
a) What is the rate constant for the second order reaction and
b) At what time would you expect 20ml of hydrochloric acid to be required?