Molar volume

Molar volume
Molar volume
Common symbols	Vm,
SI unit	m3/mol
Other units	dm3/mol, cm3/mol
Dimension	L3 N−1

In chemistry and related fields, the molar volume, symbol V_m,^[1] or ${\tilde {V}}$ of a substance is the ratio of the volume (V) occupied by a substance to the amount of substance (n), usually at a given temperature and pressure. It is also equal to the molar mass (M) divided by the mass density (ρ): $V_{\text{m}}={\frac {V}{n}}={\frac {M}{\rho }}$

The molar volume has the SI unit of cubic metres per mole (m³/mol),^[1] although it is more typical to use the units cubic decimetres per mole (dm³/mol) for gases, and cubic centimetres per mole (cm³/mol) for liquids and solids.

^ ^a ^b International Union of Pure and Applied Chemistry (1993). Quantities, Units and Symbols in Physical Chemistry, 2nd edition, Oxford: Blackwell Science. ISBN 0-632-03583-8. p. 41. Electronic version.

[GreenBook-1] International Union of Pure and Applied Chemistry (1993). Quantities, Units and Symbols in Physical Chemistry, 2nd edition, Oxford: Blackwell Science. ISBN 0-632-03583-8. p. 41. Electronic version.

[1]

Molar volume
Common symbols	V_m, ${\tilde {V}}$
SI unit	m³/mol
Other units	dm³/mol, cm³/mol
Dimension	L³ N⁻¹