If 2.0 liters of oxygen gas react with excess carbon monoxide at 273 K and 1.00 atm, how many liters of carbon dioxide can be produced under the same conditions?

2 CO (g) + O2 (g) yields 2 CO2 (g)

1.0 L
2.0 L
4.0 L
6.0 L

Question

If 2.0 liters of oxygen gas react with excess carbon monoxide at 273 K and 1.00 atm, how many liters of carbon dioxide can be produced under the same conditions? 

2 CO (g) + O2 (g) yields 2 CO2 (g)

 1.0 L
 2.0 L
 4.0 L
 6.0 L

anonymous · Answer

@jfraser

anonymous · Answer

would it be d?

jfraser · Answer

Nope. Look at the molar ratios from the reaction

jfraser · Answer

One mole of $O_2$ will produce two moles of $CO_2$

anonymous · Answer

ik iget so b? @jfraser

jfraser · Answer

Nope. 2L of $O_2$ will produce $twice$ that volume of $CO_2$

jfraser · Answer

Always remember that balanced equations give $ratios$, not absolute amounts to work with

anonymous · Answer

oh so a thanks @jfraser

jfraser · Answer

It's not a, you did the ratio backwards

rushwr · Answer

@JFraser is it 4L?

photon336 · Answer

the key here is that you know carbon monoxide is in excess, so essentially o2 is your limiting reagent and you have to use that to figure out how many moles of CO2 are produced. once you do that you can figure out the answer.