Worksheet for Dalton’s Law of Partial Pressure

Directions: Show given information, formula, plug into formula, unit cancellation, and correct answer.

1. If carbon dioxide, nitrogen, and oxygen are in a container and exert a pressure of 760 torr, and the partial pressure of carbon dixoide is 0.285 torr, the partial pressure of nitrogen is 593.525 torr, what is the partial pressure of oxygen?

Ans: 166.190 torr solution

2. Calculate th epartial pressure of oxygen collected by water displacement if the water temperature is 20^oC and the total pressure of the gases in the collection bottle is 730.0 mm Hg.

Answer: 712.5 mm Hg solution

3. A sample of gas is collected over water at a temperature of 35.0^oC when the barometric pressure reading is 742.0 mm Hg. What is the partial pressure of the dry gas?

Answer: 699.8 mm Hg solution

4. A sample of oxygen is collected in a 175 mL container over water at 15^oC, and the barometer reads 752.0 torr. What volume would the dry gas occupy at 770.0 torr and 15^oC?

Answer: 168 mL solution

5. Suppose that 120. mL of argon is collected over water at 25^oC and 780.0 torr. Calculate the volume of the dry argon at STP.

Answer: 109 mL solution