2. (25 marks) A gas phase hydrogenation reaction A + H2 C takes place in a CSTR, using mixing and the presence of an inert to keep the temperature and the concentration of hydrogen within safe limits. The feed contains equal amounts of three components: A, H2, and the inert, at a total molar flow rate of 3.0 mol/min. The reaction is first order with respect to A and H2, and occurs at constant pressure. a. Determine the mean residence time in the reactor required to obtain 75% conversion of A, and the corresponding inlet volumetric flow rate, given that the reaction rate constant is 1.0 L mol min', and the feed concentration of A is 0.50 mol/L. b. Assuming the same residence time as calculated in (a), would the conversion obtained from the segregated flow model (with the RTD for back-mixed flow) be greater than, less than, or equal to 75%? Either a calculation or discussion with justification is acceptable