reactor design

A mixture of 28% SO2 and 72% air is charged to a flow reactor in which S02 's oxidized in the peusence of 12 us token 2802.02 -- 2803 if the reaction is carried out isothermally and neglecting pressure drop, evaluate the species concentrations as a turdien de the case when the total pressure is 1485 kPa and the temperature is constant at 227C and determine the concertion S0290 X-0.25 and X -0.75