Dalton's Law 766
Channel: Professor Heath's Chemistry Channel
Date: 22/07/2015

Sulfur dioxide reacts with oxygen in the presences of platinum to give sulfur trioxide: 
2 SO2 (g) + O2 (g) → 2 SO3 (g) 
Suppose that at one stage of the reaction, 24.1 mol SO2, 79.0 mol O2, and 23 mol SO3 are present in the reaction vessel at a total pressure of 0.923 atm. Calculate the mole fraction of SO3 and its partial pressure.