# Which gas law states that the volume of a gas is directly proportional to its temperature?

Mar 9, 2016

If it's an Ideal Gas then it's : $P V = n R T \mathmr{and} V = \frac{n R T}{P}$

#### Explanation:

For Ideal Gas : $P V = n R T \mathmr{and} V = \frac{n R T}{P}$
P : Pressure $\left(P a\right)$
V : Volume $\left({m}^{3}\right)$
n : amount of substance of the gas $\left(m o l\right)$
R : gas constante $\left(8.314 J . {K}^{-} 1. m o {l}^{-} 1\right)$
T : absolute temperature $\left(K\right)$
(SI base unit)

Mar 9, 2016

Charles's law, an experimental gas law, describes how gases tend to expand on heating.

#### Explanation:

Charles's law, which is also know as Law of Volumes, states that

For a sample of a dry gas, its volume and Kelvin temperature are directly related, provided pressure is held constant.

Mathematically relationship can be written as

$V \propto T$

or $V = k T$,

where $V$ is the volume of the sample of gas, $T$ its temperature in Kelvin and $k$ is constant of proportionality.

Alternatively it can be written as
${V}_{1} / {T}_{1} = {V}_{2} / {T}_{2}$