MCAT CHEM8 Kaplan Review | 100+ Questions | Gas Laws, Ideal vs Real Gases, Pressure, Diffusion, Equations

This expert-verified Kaplan MCAT CHEM8 document delivers 100+ high-yield Q&A flashcards focused on gas behavior and laws, tailored for the MCAT Chemical and Physical Foundations section. With concise explanations, key formulas, and real-world logic, it prepares pre-med students to solve MCAT-style questions on ideal gases, gas mixtures, thermodynamic conditions, and deviations from ideality. Topics include: Properties of gases: low density, high entropy, fluidity, pressure-volume relationship Ideal gas law (PV = nRT) and its implications at STP (273 K, 1 atm; 22.4 L/mol) Major gas laws: Boyle’s Law: P₁V₁ = P₂V₂ (constant T) Charles’ Law: V₁/T₁ = V₂/T₂ (constant P) Gay-Lussac’s Law: P₁/T₁ = P₂/T₂ (constant V) Partial pressures and Dalton’s Law Henry’s Law: solubility of a gas is proportional to its partial pressure Kinetic Molecular Theory: Gas particles move randomly, undergo elastic collisions, and exhibit KE proportional to temperature Negligible volume and no intermolecular forces assumed in ideal models Graham’s Law: lighter gases diffuse/effuse faster Real gas deviations: Deviate from ideal behavior at low temperatures and high pressures Use of Van der Waals equation to correct for intermolecular forces and molecular volume Essential gas equations: PV = nRT and its rearrangements for density (d = PM/RT), moles, volume, pressure KE = ½mv², r₁/r₂ = √(M₂/M₁) for effusion/diffusion comparisons R constants: 0.0821 L·atm/mol·K or 8.314 J/mol·K MCAT math application: Sample gas law problems involving vapor pressure, water displacement, mixture pressures, and temperature estimation Conceptual links between equations and observed behavior under different conditions Perfect for: MCAT preparation, especially General Chemistry and Physics crossover questions Students in General Chemistry, Physical Chemistry, or Thermodynamics Keywords: ideal gas law, PV=nRT, STP, Boyle’s law, Charles’ law, Gay-Lussac’s law, Dalton’s law, Henry’s law, Graham’s law, kinetic molecular theory, gas pressure, gas volume, gas temperature, gas density, diffusion, effusion, partial pressure, Van der Waals equation, real gases, gas constant, thermodynamic gas behavior, MCAT chemistry, Kaplan CHEM8