1. Chapter 12.2 Gas Laws
Gay-Lussacs Law

2. Gay-Lussac’s Law Compares pressure to temperature
If pressure increases, collisions of particles increase.
If collisions of particles increases, temperature increases

3. P1 = initial pressure
T1 = initial temperature (K)
P2 = Final Pressure
T2 = Final Temperature (K)

4. Example
An aerosol can containing gas at 101 kPa and 22o C is heated to 55o C. Calculate the pressure in the heated can.

5. Write down was is given
P1 =101kPa
T1 =22o C
P2 = ?
T2 = 55o C

6. Remember to convert temperature into Kelvin
T1 = 25o C = 295 K
T2 = 55o C = 328 K

7. 101 kPa / 295 K = P2 / 328 K
= (101 kPa)(328K) / 295 K = 112 kPa