Additional Homework Problems

CDP3-CB		The elementary reaction is taking place only in the gas phase of a square duct. The feed to the duct consists of a gas stream of pure A and a liquid stream of pure B. The flowing liquid B covers the bottom of the duct and evaporates into the gas phase, maintaining its equilibrium vapor pressure throughout the system. The gas phase flows in plug flow. Ignore the volume occupied by liquid B (see Figure CDP3-C). Figure CDP3-C
		(a) Express the rate law solely as a function of conversion, and evaluate numerically all possible symbols. (b) What is the rate of reaction, -rA, when the conversion is 50%? Total pressure (considered constant): 1 atm Value of k: 106 ft3/lb mols Temperature within the reactor (considered constant): 540°F Vapor pressure of B: 0.25 atm at 540°F Inlet flow rate of A: 1.5 lb mol/ s (Ans.: 0.174 lb mol/ ft3s.)
CDP3-DB		The following elementary gas-phase reaction takes place in a constant-pressure isothermal vessel (1 atm, 25°C):
		Additional information:
CDP3-EB		Benzylamide is the product obtained from the liquid-phase reaction of ammonia and benzoyl chloride: (a) Taking benzoyl chloride as your basis of calculation, set up a stoichiometric table for a batch system. (b) If the initial mixture consisted solely of ammonia at a concentration of 6 gmol/L and benzoyl chloride at a concentration of 2 g mol/L, calculate the concentrations of ammonia and benzylamide when the conversion is 25%. (c) Taking ammonia as your basis of calculation, explain how your stoichiometric table would be different for a flow system.