An acetylene -oxygen mixture, which contains 25 mol % acetylene (C2H2) and 75% mol oxygen is fed at the rate of 1g-mol/min to a reactor where acetylene reacts completely with oxygen to form CO2 and water vapor according to the stoichiometry C2H2+2.5 O2 —-> 2CO2 +H2O.

Determine the molar flow rates and mole fractions of the various species in the reactor effluent.