Kinetic Theory of Gases notes
OpenThe 4 formulas you need for Kinetic Theory of Gases, on one page.
For explanations and lectures, see the full topic page. Then test yourself with 6 JEE Main 2026 PYQs.
Physics · printable
Kinetic Theory of Gases: One-Page Formula Sheet
Print it or save it as a PDF. It fits on one page.
Last updated: 26 October 2026
Formula sheet
Kinetic Theory of Gases formulas
Kinetic Theory of Gases — formula sheet
Formulas
- P = ⅓ρv_rms²
- v_rms = √(3RT/M), v_avg = √(8RT/πM), v_mp = √(2RT/M)
- Cᵥ = fR/2, γ = 1 + 2/f
- Mean free path λ = 1 / (√2 π d² n)
Key ideas
- Pressure comes from molecular collisions with walls
- Average KE per molecule = (3/2)kT
- Each degree of freedom gets ½kT
- Monatomic f = 3, diatomic f = 5 (at room temperature)
Traps to avoid
- Using molar mass in g instead of kg in v_rms
- Taking f = 5 for monatomic gases
- Mixing up the order v_rms > v_avg > v_mp
jeevisionary.in/jee-topics/physics/kinetic-theory/
FAQs
Frequently asked questions
Where can I get a Kinetic Theory of Gases formula sheet PDF for free?
On this page. Use the print button and choose 'Save as PDF'.
How should I use a formula sheet?
Read it once a day for a week, then cover it and write the formulas from memory. Revise only the ones you missed.