P4-8 8B The gas-phase reaction 21N2+23H2NH3 is to be carried out isothermally. The molar feed is 50%H2 and 50%N2, at a pressure of 16.4atm and at a temperature of 227C. (a) Construct a complete stoichiometric table. (b) What are CA0,, and ? Calculate the concentrations of ammonia and hydrogen when the conversion of H2 is 60%. (Ans: CH2=0.1mol/dm3 ) (c) Suppose by chance the reaction is elementary with kN2=40dm3/mol/s. Write the rate of reaction solely as a function of conversion for (1) a flow system and for (2) a constant volume batch system