Sulphur trioxide is formed by the reaction between sulphur dioxide and air in a catalytic reactor according to: 2SO2 + O2 = 2SO3
The reaction conditions give a 50% conversion when stoichemetric quantities of the reaction are used.
Calculate the composition (on a mole fraction basis) of the final mixture leaving the reactor.
Data: air 21%v/v oxygen and 79% v/v nitrogen.