Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
The Combined Gas Law is a rearrangement of the Ideal Gas Law that allows us to compare the initial and final states of a gas sample where pressure, volume, and temperature can change.
A law stating that at constant temperature, the volume of a given mass of an ideal gas is inversely proportional to its pressure.
Charles' Law: A law stating that at constant pressure, the volume of a given mass of an ideal gas increases or decreases by the same factor as its temperature on an absolute scale.
A law stating that at constant volume, the pressure exerted by a given mass of an ideal gas increases or decreases by the same factor as its temperature on an absolute scale.