Dalton's Law of Partial Pressures

A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?

• 2.00 atm

• 4.00 atm

• 3.00 atm

• 9.00 atm

• Helium

• Nitrogen

• Oxygen

• All have the same number of molecules

A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220. mmHg and that of nitrogen is 410. mmHg. What is the partial pressure of water vapor?

• 234 mmHg

• 1.37 mmHg

• 2.64 mmHg

• 1490 mmHg

The partial pressure of gas X is 340 mm Hg. The partial pressure of gas Y is 264 mm Hg. The partial pressure of gas Z is 100 torr. What is the total pressure exerted by the gases in this system?

• 76 mm Hg

• 440 mm Hg

• 604 mm Hg

• 704 mm Hg

A container is filled with H₂, and H₂O. Calculate the partial pressure of H₂ when the pressure of water is 17 mm Hg. The total pressure of the gases is 750 mm Hg.

• 767.5 mm Hg

• 733 mm Hg

• 42.86 mm Hg

A sample of hydrogen gas is collected over water at 25 °C and a pressure of 0.981 atm. What is the pressure of the dry hydrogen kPa?

• 96.2 kPa

• 0.950 kPa

• 75.6 kPa

• 0.981 atm

4.50 L of hydrogen sulfide, H₂S, is collected over water at a pressure of 752 mm Hg and a temperature of 40.0 °C. What volume would the dry gas occupy at STP?

• 3.60 L

• 3.88 L

• 4.73 L

• 4.50 L