APCHEM Gasses

• Distillation

Very simple equation

$$ P_{t}=\sum P_{n} $$ ### Or for dummies:

$$ P_{t} = P_{1}+P_{2}+\ …\ + P_{n} $$ # To find one element’s partial pressure

$$ P_A = x_A P_A^* $$ where:

• $ P_A $ is the partial pressure of component A
• $ x_A $ is the mole fraction of component A in the liquid phase
• $ P_A^* $ is the vapor pressure of pure component A