Gas Laws
Units in Gas Law Problems
One problem associated with gas law problems is unit agreement.It is important that pressure, volume and temperature units matchor agree within a problem. Solve 1-4 using the factor-label method.Problems 5 and 6 are done without factor-label.
1. Convert 1.52 atm to kPa 2. Convert 85 kPa to mmHg
3. Convert 156.3 mmHg to atm 4. Convert 950 torr to kPa
5. Convert -250.0 °C to K 6. Convert 253 K to °C
Boyle’s Law
7. Equation for Boyle’s Law:
8. A gas occupies 12.3 L at 825.7 mmHg. What will the pressurebe when the volume is 75 L?
9. A gas occupies 25 L at 2.5 atm. What is the volume if thepressure changes to 1.5 atm?
10. You have 50 L of CO2gas at standard temperature and pressure (STP). What would need tobe done to the pressure to cut the volume of gas in half?
Charles’ Law
11. Equation for Charles’ Law:
12. How do these two factors relate to each other?
13. What does temperature actually measure?
14. At 27.8 °C, a gas occupies 1500 m. What volume will it haveat 100.0 °C?
15. What temperature (in K) must a gasbe if it occupied 1.396 L at 72.3 °C and now occupies 1.044 L?
Gay-Lussac’s Law
16. Equation for Charles’ Law:
17. A gas cylinder contains nitrogen gas at 10-atm pressure anda temperature of 20ËšC. The cylinder is left in the sun, and thetemperature of the gas increases to 50ËšC. What is the pressure inthe cylinder?
18. A bike tire has a volume of 0.850L at a pressure of 40 psiand 0ËšC. What will be the pressure of the tire at 35ËšC?
19. An aerosol can has a fixed volume of gas at 4.0-atm ofpressure and room temperature (25ËšC). If the pressure inside thecan reaches 5.9-atm the can will explode. The can is thrown into afire that is 400ËšC. Will the can explode? Show all calculations tosupport your answer.
