a solution of acetic anhydride containing 0.22 mol/lit is to be hydrolyzed continuously in a stirred tank reactor to give an effluent containing an anhydride concentration of 0.04 mol/lit. The solution has a specific gravity of 1.05 and is to be fed at a rate of 50 lit/min into an effective reactor volume at 750 lit. If the external surface area of the reactor available for heat transfer is 5.0m^2, the ambient temperature is 25C and the surface coefficient of heat transfer is 0.5 cal/cm^2*hr*C. 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 to anhydride concentration and may be expressed as:

k=0.158exp(18.55-10980/RTs), delta H=-50,000cal/mol, Cp=0.7 cal/gm*C