$\overline{)\frac{{\mathbf{P}}_{\mathbf{1}}}{{\mathbf{n}}_{\mathbf{1}}}{\mathbf{=}}\frac{{\mathbf{P}}_{\mathbf{2}}}{{\mathbf{n}}_{\mathbf{2}}}}$

rearrange to arrive at:

${\mathbf{n}}_{\mathbf{2}}\mathbf{=}{\mathbf{n}}_{\mathbf{1}}\mathbf{\left(}\frac{{\mathbf{P}}_{\mathbf{2}}}{{\mathbf{P}}_{\mathbf{1}}}\mathbf{\right)}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}{\mathbf{n}}_{\mathbf{2}}\mathbf{=}\mathbf{(}\mathbf{2}\mathbf{.}\mathbf{0}\mathbf{}\mathbf{mol}\mathbf{}\mathbf{CO}\mathbf{}\mathbf{+}\mathbf{}\mathbf{1}\mathbf{.}\mathbf{0}\mathbf{}\mathbf{mol}\mathbf{}{\mathbf{O}}_{\mathbf{2}}\mathbf{)}\mathbf{\left(}\frac{\mathbf{556}\mathbf{}\overline{)\mathbf{torr}}}{\mathbf{750}\mathbf{}\overline{)\mathbf{torr}}}\mathbf{\right)}$

**n _{2} = 2.224 mol**

A catalytic converter in an automobile uses a palladium or platinum catalyst to convert carbon monoxide gas to carbon dioxide according to the following reaction: 2 CO(g) + O_{2}(g) → 2 CO_{2}(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 750 torr and a temperature of 552˚C. When the reaction is complete, the pressure in the flask has dropped to 556 torr. What percentage of the carbon monoxide was converted to carbon dioxide?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Gas Stoichiometry concept. You can view video lessons to learn Gas Stoichiometry. Or if you need more Gas Stoichiometry practice, you can also practice Gas Stoichiometry practice problems.