# How are absolute temperature and volume of a gas related?

##### 1 Answer

The volume of a gas is directly proportional to its absolute temperature.

More specifically, for a fixed mass of gas at a constant pressure, the volume (V) is directly proportional to the absolute temperature (T). This is *Charles’ Law*.

V ∝ T

V = kT, where k is a proportionality constant.

Since k is a constant,

*EXAMPLE*

A gas has a volume of 30.0 cm³ at 30 °C (303 K). What is its volume at 60 °C (333 K)?

*Solution*

V₁ = 30.0 cm³; T₁ = 303 K; V₂ = ?; T₂ = 333 K

V₂ = V₁×

The absolute temperature increased by a factor of