Question

PLEASE HELP! <3 ill give a medal! i think i have the right answer i just need someone to check it!

Assuming all volume measurements are made at the same temperature and pressure, how many liters of oxygen gas would it take to react completely with 7.25 liters of hydrogen gas? Show all of the steps taken to solve this problem.

Balanced equation: 2 H2 (g) + O2 (g) 2 H2 O(g)

i got 3.6

Answer 1

you're right, because we're assuming ideal gas behaviour, the volume of gas (L) is proportional to moles, thus:
\[\frac{ 7.25 L }{ 2 }=\frac{ L _{O _{2}} }{ 1}\]
L of O2 = 3.625 L