1. Gas Laws
Chapter 11
Section 2

2. Boyle’s Law
Boyle’s law shows the relationship between pressure and volume
The relationship is inverse
Volume pressure
Mathematically: PV = k
k is a constant
When temperature is held constant:
P1V1 = P2V2  

3. Problem 1
A sample of oxygen gas has a volume of mL when its pressure is atm. What will the volume of the gas be at a pressure of atm if the temperature remains constant?

4. Charles’s Law
Charles’s law show the relationship between volume and temperature
The relationship is direct
Temperature volume
V = kT or V/T = k
When pressure is held constant:
Temp. has to be in Kelvins (K = °C + 273)  

5. Problem 2
A sample of neon gas occupies a volume of 752 mL at 25°C. What volume will the gas occupy at 50°C if the pressure remains constant?

6. Gay-Lussac’s Law
Gay-Lussac’s law shows the relationship between pressure and temperature
The relationship is direct
Temperature pressure
P = kT or P/T = k
When volume is held constant:
Temp. must be Kelvins (K = °C + 273)  

7. Problem 3
The gas in a container is at a pressure of 3.00 atm at 25°C. Directions on the container warn the user not to keep it in a place where the temperature exceeds 52°C. What would the gas pressure in the container be at 52°C?

8. Graphical Representations of the Gas Laws
Boyle’s law Charles’s law Gay-Lussac’s law

9. Combined Gas Law
When the amount of the gas is held constant

10. Problem 4
A helium-filled balloon has a volume of 50.0 L at 25°C and 1.08 atm. What volume will it have at atm and 10.0°C?