Volume occupied by a given amount of particles of a substance
Molar volume
Common symbols
Vm,
SI unit
m3/mol
Other units
dm3/mol, cm3/mol
Dimension
L3N−1
In chemistry and related fields, the molar volume, symbol Vm,[1] or of a substance is the ratio of the volume occupied by a substance to the amount of substance, usually at a given temperature and pressure. It is equal to the molar mass (M) divided by the mass density (ρ):
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.
^ abInternational 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.
and related fields, the molarvolume, symbol Vm, or V ~ {\displaystyle {\tilde {V}}} of a substance is the ratio of the volume occupied by a substance...
terms of amount of substance per unit volume of solution. In chemistry, the most commonly used unit for molarity is the number of moles per liter, having...
{RT}{PM}}} Specific volume is commonly applied to: MolarvolumeVolume (thermodynamics) Partial molarvolume Imagine a variable-volume, airtight chamber...
partial molar property. The partial molarvolume is broadly understood as the contribution that a component of a mixture makes to the overall volume of the...
of concentration equal to 1 mole per litre Molar quantities, such as molar mass, molarvolume, etc. El Molar, Tarragona, a village in the comarca (county)...
expressed on a molar basis, and their name may be qualified with the adjective molar, yielding terms such as molarvolume, molar internal energy, molar enthalpy...
Apparent molar property For non-ideal mixtures, see Partial molarvolume and Excess molar quantity Percentage Mass fraction (chemistry) IUPAC, Compendium...
pressure when stating the molarvolume of a gas as it is when expressing a gas volume or volumetric flow rate. Stating the molarvolume of a gas without indicating...
in grams, to the molar mass of the substance, in grams per mole (g/mol). The constant NA also relates the molarvolume (the volume per mole) of a substance...
specified in moles rather than by mass or volume. The molar heat capacity generally increases with the molar mass, often varies with temperature and pressure...
water is about 18.015 Da and the molar mass of water is about 18.015 g/mol. Other methods include the use of the molarvolume or the measurement of electric...
The molar conductivity of an electrolyte solution is defined as its conductivity divided by its molar concentration. Λ m = κ c , {\displaystyle \Lambda...
about 1⁄1000 of the volume of the gas, the rest is empty space. Hence the molar van der Waals volume, which only counts the volume occupied by the atoms...
In polymer chemistry, the molar mass distribution (or molecular weight distribution) describes the relationship between the number of moles of each polymer...
pure component's molarvolume and molar enthalpy are equal to the corresponding partial molar quantities because there is no volume or internal energy...
mass of solvent. This contrasts with the definition of molarity which is based on a given volume of solution. A commonly used unit for molality is the...
the atomic molarvolume of materials (their atomic density). An additional factor for all types of specific heat capacities (including molar specific heats)...
causes a decrease in volume. The phenomenon of volume changes due to mixing dissimilar solutions is called "partial molarvolume". Water and ethanol are...
where n is the total number of moles of gas molecules in the volume V, and n/V is the molar concentration of gas molecules. Harmon Northrop Morse and Frazer...
of apparent molar properties of a component may be quite different from its molar properties in the pure state. For instance, the volume of a solution...
divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number...
times molarvolume squared, [pv2] which is also molar energy times molarvolume. The constant b {\displaystyle b} denotes an excluded molarvolume due to...
temperature and density and which can be rewritten as a cubic function of the molarvolume. Equations of state are generally applied in the fields of physical chemistry...
possible owing to molarvolume expansion, and even then only if the ice were rigidly constrained laterally in the soil so that the entire volume expansion had...
gas behaviour. It is simply defined as the ratio of the molarvolume of a gas to the molarvolume of an ideal gas at the same temperature and pressure....
{\displaystyle \left({\frac {\partial g(T,P)}{\partial P}}\right)_{T}=v} with the molarvolume v {\displaystyle v} , these last two equations put together give: ( ∂...
molar gas constant (also known as the gas constant, universal gas constant, or ideal gas constant) is denoted by the symbol R or R. It is the molar equivalent...
Global Information
