We want to hydrolyze 500 lb per day of an ester at an initial concentration of 5 m (the ester has a molecular weight of 130) in aqueous basic solution in a batch process, and we need product that is 99% hydrolyzed. in benchtop experiments in a flask, we find that 50% of the ester hydrolyzes in 15 min for initial ester concentrations of either 1 or 5 m. we also find that, when we react for 8 h, all of the ester has hydrolyzed. it takes 1 h to empty the reactor and refill and heat it to start another batch. what size reactor will we need?