Summary Kinetic theory of gases short notes

KINETIC THEORY OF GASES

NEET FOCUSED FORMULA FIRST FAST REVISION



1. Ideal Gas — Core Conditions
• Intermolecular attractions ≈0 • Walls: adiabatic → ∆ q = 0

• Pressure and density should be very small. • Walls: diathermic → ∆≠q 0

• Temperature should be very high compared with
its condensation point.


2. Gas Laws
Boyle's law T = constant P ∝1/V
Gay-Lussac's law V = constant P ∝T

Combined gas law PV/T = constant


combined law

P1 V1/T1=P2 V2/T2


3. Molecular Speeds

Average speed vavg = (8RT
√ / πM)

RMS speed vrms = (3RT
√ / M)

Most probable speed vmp = (2RT
√ / M)


4. Relation Between Pressure and RMS Speed

KINETIC THEORY RELATION
2
P = 1/3 ρ v
rms


Where: P = pressure, ρ = density, v = root-mean-square speed.
rms




Kinetic Theory of Gases • Quick Revision • 1