1. Gas Laws Review

2. Important Info
Standard temp/pressure: 273K (0 C) and 1 atm (760 mmHg or torr)
1 atm = 760 mmHg = 760 torr = kPa
Daltons Law: Ptotal = P1 + P2….
Boyle’s law: P1V1 = P2V2
Charle’s Law: V1 / T1 = V2 / T2
Gay-Lussac’s Law: P1 / T1 = P2 / T2
Combined Gas Law: P1V1 / T1 = P2V2 / T2
K = C

3. Practice Question 1
Convert the pressure atm to mm Hg.

4. Practice Question 2
A sample of oxygen occupies 560. mL when the pressure is mm Hg. At constant temperature, what volume does the gas occupy when the pressure decreases to mm Hg?

5. Practice Question 3
On a cold winter morning when the temperature is –13°C, the air pressure in an automobile tire is 1.5 atm. If the volume does not change, what is the pressure after the tire has warmed to 15°C?

6. Practice Question 4
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 atm, respectively. What is the total pressure inside the container?

7. Practice Question 5
2.00 L of a gas is collected at 25.0 °C and mmHg. What is the volume at STP?