The reversible reaction of sulfur dioxide and oxygen to form sulfur trioxide is shown below. 2SO2(g) + O2(g) 2SO3(g) An equilibrium mixture contains 2.4mol SO2, 1.2mol O2 and 0.4mol SO3. The total pressure is 250atm. What is the p(SO3)?
First step is to calculate the mole fraction of the SO3. This can be done by dividing the moles of SO3 by the total moles at equilibrium to give 0.4/4. This is then multiplied by the total pressure at equilibrium to give 25 atm.
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