Problem: A solution of acetic anhydride containing 0.22mol/ lit is to be hydrolyzed continuously in a stirred tank reactor to give an effluent containing an anhydride concentration of 0.04mol/lit, the solution has a Sp.gr. Of 1.05 and is to be fed at a rate of 50lit/min into an effective reactor volume at 750 lit. if the external surface area of the reactor available for heat transfer is 5.0m2, the ambient temperature is 25C, and the surface coefficient of heat transfer is 0.5cm2hr.Ccal. Determine the reactor operating temperature and the required feed solution temperature in order that it will be unnecessary to install a cooling coil for further heat removal. The kinetic data are first order with respect anhydride concentration and may be expressed as