Consider the combustion of carbon monoxide (CO) in oxygen gas:
2CO(g) + O2 (g) -- 2CO2(g)
Starting with 3.84 moles of CO, calculate the number of moles of CO2 produced if there is enough oxygen gas to react with all the CO.

Question

Consider the combustion of carbon monoxide (CO) in oxygen gas:
2CO(g) + O2 (g) --> 2CO2(g)
Starting with 3.84 moles of CO, calculate the number of moles of CO2 produced if there is enough oxygen gas to react with all the CO.

aaronq · Answer

Use the stoichiometric coefficients to build a ratio, like this:

e.g. for a general reaction:

                      $\color{red}{a}A + \color{blue}{b}B$ $\rightleftharpoons$ $ \color{green}{c}C$

where upper case are the species (A,B,C), and lower case (a,b,c) are the coefficients (in red),

                     $\dfrac{n_A}{\color{red}{a}}=\dfrac{n_B}{\color{blue}{b}}=\dfrac{n_C}{\color{green}{c}}$

and solve for the moles of $CO_2$, ($n_{CO_2}$).