In a titration of monoprotic acids and bases, there is a large change in pH Select one: O a. when the number of moles of acid is exactly equal to the number of moles of base. O b. when the volume of acid is exactly equal to the volume of base. c. at the point where Hotelfiche alt 0 d. when the concentration of lacid is exactly equal to the concentration of base. e at the point where pH = pko ofthe base