(a) What are the essential characteristics (or assumptions made) for the operation of a continuous stirred tank reactor (CSTR)? (b) Show by mass balance that the space time for the conversion of a reactant A in a CSTR is given by (clearly define any terms used other than those indicated below) =RACA0CA where CAO is the initial feed concentration of component A,CA is the tank concentration of component A, and A is the rate of reaction with respect to component A. (c) A well-mixed CSTR is used to perform the reaction AB The reaction is first order with respect to component A and the value of the rate constant k is 0.025s1. The volumetric flow rate of the feed stream containing component A into the vessel is 3.5Ls1 and the desired conversion is 55% of material A. i. Calculate the required volume of the vessel. ii. Calculate the mean residence time of the reaction. (d) If a train of three equal size CSTRs is used to perform the reaction, how would this affect the performance of the process