Acatalytic converter in an automobile uses a palladium or platinum catalyst to convert carbon monoxide gas to carbon dioxide according to the following reaction: 2co(g)+o2(g)→2co2(g) a chemist researching the effectiveness of a new catalyst combines a 2.0 : 1.0 mole ratio mixture of carbon monoxide and oxygen gas (respectively) over the catalyst in a 2.45−l flask at a total pressure of 735 torr and a temperature of 552 ∘c. when the reaction is complete, the pressure in the flask has dropped to 550 torr .