Gas Law Test Review
1. A gas sample contained in a cylinder equipped with a moveable piston occupied 400.0 mL at a pressure of 2.00 atm. What would be the final pressure if the volume were increased to 750.0 mL at constant temperature?
2. A balloon that contains 4.50 L of air at 1.00 atm is taken underwater to a depth at which the pressure is 3.00 atm. Calculate the new volume of the balloon. Assume that the temperature remains constant.
3. A weather balloon is filled to the volume of 150.0 L on a day when the temperature is 50.0C. If no gases escaped, what would be the volume of the weather balloon after it rises to an altitude where the temperature is -8.00C?
4. A sample of gas occupies a volume of 7.50 L at 0.988 atm and 58.0C. At what temperature, in degrees Celsius, is the volume of the gas 4.00 L if the pressure is kept constant.
5. A gas occupies a volume of 50.0 mL at 27C and 630 mmHg. At what temperature, in C, would the pressure be 800. mmHg if the volume remains constant?
6. A sample of gas occupies a volume of 6.00 L at 750. mmHg and 30.0C. At what temperature, in C, would the pressure be 600. torr if the volume remains constant?
7. The temperature of 400.0 mL of a gas originally at STP is changed to 115C at constant volume. Calculate the pressure of the gas in atm.
8. A certain gas has a volume of 750.0 mL at 87.0C and 600.0 torr. Calculate the temperature, C, if the volume decreased to 400.0 mL an the pressure is increased to 1.00 atm.
9. A given sample of gas has a volume of 7.20 L at 80.0C and 2.00 atm pressure. Calculate its pressure if the volume is changed to 5.00 L and the temperature to 27C.
10. A gas has a volume of 240.0mL at 25.0C and 700.0 mmHg. Calculate its volume at STP.
11. A gas mixture containing oxygen, nitrogen, and carbon dioxide has a pressure of 350.mmHg. If the partial pressure of oxygen is 50.0mmHg and the partial pressure of nitrogen is 175mmHg, what is the partial pressure of the carbon dioxide?
12. The volume of oxygen collected over water is 18.5 mL at 75.0C and 780.torr. Calculate the dry volume of the oxygen if the temperature and pressure changed to STP.
- It is desired to obtain a volume of 1000.mL of nitrogen at 200.C and 740.torr. How many grams of N2 would be required?
14. Some oxygen is collected in a 250.mL container at 25.0C and 720.mmHg. How many grams of oxygen gas is this?
15. What is the pressure, in torr, of a gas occupying 1.07L at 62.0C and containing 0.0448 moles of gas?
16. Calculate the mass of 1.50 L of CCl4 at STP.
17. Calculate the volume in liters of 75.0 grams of nitrogen dioxide at STP.
18. Calculate the volume of hydrogen gas at produced by the reaction of 0.52 grams of solid calcium with excess hydrochloric acid.
19. How many liters of hydrogen gas are needed to react completely with 50.0 L of bromine gas at STP?
20. Given the following reaction: 2NO (g) + O2 (g) 2NO2 (g) How many liters of gaseous oxygen are needed to produce 6.50 L of gaseous nitrogen dioxide, if both gases are being measured at STP?