1. Gas Laws

2. Conversions
1. Convert 50°C to °K
2. Convert 212kPa to atm

3. Ideal Gas Law (Units and STP)
PV=nRT
Pressure = atm
Volume = Liters
n = moles
R = L *atm /°K *mol (more detail later on)
Temperature = Kelvin
STP (standard temperature and pressure)
The standard temperature of a gas is °K (0°C)
The standard pressure of a gas is 1 atm (101kPa)

4. Gas Constant R Ratio between T and P in 1L of 1 mole of any gas
P= RT when n= 1 and v = 1
Similar to how π is the ratio between the circumference and diameter of a circle (C = πd)
R= atm*L/ mol* °K
R is SPECIFIC to atm and °K (you will not get the correct answer if temperature is in °C or pressure is in kPa)

5. What PV = nRT is Used for….
1. Finding a condition of a gas or amount of gas when given the rest.
Sample Problem: Determine the volume of 1 mole of gas at 0 °C and 1 atm using the equation PV=nRT
Remember: Temperature must be °K and Pressure must be atm.
2. Solving a stoichiometry problem that involves consumption or production of a gas
Used to convert between moles and volume

6. Combined Gas Law P1V1T2 = P2V2T1
It is a combination of Boyle’s, Charles’ and Gay-Lussac’s law.
It is used to calculate the change in pressure, volume and temperature of a gas by using the formula :
P1V1T2 = P2V2T1
Boyle’s Law- The gas law that states pressure and volume are inversely proportional. It is applied by calculating the change in pressure and volume of a gas by using the formula P1V1=P2V2.
Charles’ Law- The gas law that states volume and temperature are directly proportional. It is applied by calculating the change in volume and temperature of a gas by using the formula 𝑉1 𝑇1 = 𝑉2 𝑇2 .
Gay-Lussac’s Law- The gas law that states pressure and temperature are directly proportional. It is applied by calculating the change in pressure and temperature of a gas by using the formula 𝑃1 𝑇1 = 𝑃2 𝑇2 .