Hydrogen cyanide (hcn) can also be produced by gas-phase nitrogenation of acetylene (c2h2) according to the reaction 2hcn (g) n2 (g)+cah2 (8) the feed to the reactor consists of gaseous n2 and c2h2 in their stoichiometric proportions and the reaction temperature is controlled at 573 k. estimate the maximum mole fraction of hcn in the product stream for a reactor pressure of 200 bar. at this pressure, the assumption of ideal gas behavior is not valid. instead, you can assume the gas mixture is an ideal solution. data critical pressure (pe) of n2-33.9 bar 126.2 k critical temperature (te) of n2 critical temperature (te) of cah2-308.3 acentric factor () of n2 0.04 acentric factor (a) of c2h2 0.184 critical pressure (pe) of c2h2 61.4 bar 49.6 bar critical pressure (pe) of hcn critical temperature (te) of hcn-456.7 k acentric factor (a) of hcn 0.4 standard gibbs free energy of reaction at 573 k= (ag°573)exn =30.1 kj/mole