Ideal Gas Law vs Boyle's Law

Boyle's law is a special case of the ideal gas law when temperature and moles are constant. Understanding this relationship simplifies many gas law problems.

Step-by-step

1. Boyle's law: P₁V₁ = P₂V₂ (constant T and n) — for pressure-volume changes.
2. Charles's law: V₁/T₁ = V₂/T₂ (constant P and n) — for temperature-volume changes.
3. Combined gas law: P₁V₁/T₁ = P₂V₂/T₂ (constant n).
4. Ideal gas law: PV = nRT — use when moles change or all four variables are involved.
5. Example: compressing 2 L at 1 atm to 0.5 L at constant T → Boyle's law gives P₂ = 4 atm.
6. Calculate with our Ideal Gas Law Calculator and Boyle's Law Calculator.

Open the Ideal Gas Law Calculator to apply these steps with your own numbers instantly.

Frequently asked questions