This is an old revision of the document!
Table of Contents
Ideal Gas Law
Formula
- $P$ = Pressure
- $V$ = Volume
- $n$ = # Particles
- $R$ = Gas law constant 1)
- $T$ = Temperature MUST BE IN KELVIN (K)
$PV = nRT$
$PV = k$2) is Boyle's law, it is the only inverse relationship of the ideal gas law. $\frac{V}{T} = k$ is Charles's law, it is a direct relationship. $\frac{V}{n} = k$ is Avogadro's law, it is also a direct relation. $\frac{P}{T} = k$ is Gay-Lussac's law, it is once again a direct relationship.
Derivative Formulas
It isn't necessarily required to know these ones as the ideal gas law covers them.
Combined Gas Law
$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$
This can be simplified to (depending on if certain variables are equal on both sides)
- $\frac{P_1}{T_1} = \frac{P_2}{T_2}$
- $P_1V_1 = P_2V_2$
- $\frac{V_1}{T_1} = \frac{V_2}{T_2}$
Avogadro's Law
$\frac{V_1}{n_1} = \frac{V_2}{n_2}$
1)
$R$ = 8.31 J mol^-1K^1 = 0.0821 L atm mol^-1K^-1 = 62.4 L torr mol^-1K^-1
2)
k is the law's constant