GAS LAW QUESTIONS
1. A gas mixture is made of 0.2 mole of CH4, 0.6
mole of O2 and 1.2 moles of SO2. The mixture
exerts a total pressure of 400 mm Hg . What is
the partial pressure of O2 gas?
6.
20cm
X(g)
Y(g)
V
T
2V
T
h
2. A gas mixture consists of equal masses of He,
CH4 and O2 gases. The partial pressure of CH4 is
2 Atm. What is the total pressure of the
mixture?
Hg
Hg
The atmospheric pressure is 70 cm Hg. The
mole ratio of the gases in the containers is
nx = 3 What is the height “h”?
ny 8
3. A container has a certain amount of He gas.
When 26.4 grams of C3H8 is added it is
observed that 40% of the total pressure is
exerted by He gas. Find the mass of He.
4. A gas mixture is made of 32 grams of O2,
2 moles of N2 and some H2 gases. The total
pressure is 400 mm Hg and the partial pressure
of H2 is 80 mm Hg. How many grams of H2 are
present in the mixture?
5.
1.5 moles of Ne, 0.5 mole of N2 and 1 mole of
CO2 gases exert a total pressure of 300 mm Hg
in a closed container. What will be the partial
pressure of N2 gas when the volume of the
container is doubled?
7. A container has O2, H2 and CH4 gases at 50
0
C. The partial pressures of these gases are 60
mm Hg, 20 mm Hg and 120 mm Hg respectively.
Find the mole % of O2 in the mixture.
8. A mixture of CO and C4H8 gases contain 20%
CO by mass. The total pressure is 15 Atm.
What is the partial pressure of C4H8 gas?1