Question

In the following reaction, how many liters of O2 will produce 43.62 liters of CO2 at STP?

C3H8 + 5 O2 3 CO2 + 4 H2O


72.7 liters


17.45 liters


14.54 liters


54.53 liters


36.3 liters

Answer 1

volumes of gases are handled differently than masses, because we \(can\) directly compare volumes of gases using the stoichiometric coefficients, where we \(can't\) compare masses of compounds directly.

The balanced reaction tells you the relative number of \(moles\) that will react together, and it also tells you the \(volumes\) of gases that will react. Use the stoichiometric coefficients to make a ratio of \(CO_2:O_2\) that you can use as a conversion fraction

Answer 2

So, how would this be set up?

I partially understand what you explained, but now to a full extent.

Answer 3

then you would cross multiply to find x