MCAT General Chemistry Review - Alexander Stone Macnow, MD 2019-2020

The Gas Phase
Equations to Remember

(8.1) Ideal gas law: PV = nRT

(8.2) Density of a gas:

(8.3) Combined gas law:

(8.4) Avogadro’s principle:

(8.5) Boyle’s law: PV = k or P₁V₁ = P₂V₂

(8.6) Charles’s law:

(8.7) Gay-Lussac’s law:

(8.8) Dalton’s law (total pressure from partial pressures): P_T = P_A + P_B + P_C + …

(8.9) Dalton’s law (partial pressure from total pressure): P_A = X_AP_T

(8.10) Henry’s law: [A] = k_H × P_A or

(8.11) Average kinetic energy of a gas:

(8.12) Root-mean-square speed:

(8.13) Graham’s law:

(8.14) Van der Waals equation of state: