What is the standard volume in NTP

Molar volume

The molar volume V, also known as the molar volumem is defined as volume, the 1n = 6.022140857 (74) × 1023 Ingesting particles of a substance.

The temperature and pressure dependent size is in m3 mol-1 specified.

The specified amount of substance n corresponds to one mole.

The following applies (with V = volume, n = amount of substance, M = molar mass, NA. = Avogadro constant, ρ = density):



Molar volume of an ideal gas

[Status: CODATA values ​​2014]


Molar volume of an ideal gas (standard conditions)
Conditions:273.15 K and 101.325 kPa
Value:22,413 962 × 10-3m3 mol-1
Standard deviation:0.000 013 x 10-3m3 mol-1
Relative standard deviation:5.7 x 10-7
Presentation:22.413962 (13) x 10-3m3 mol-1


Molar volume of an ideal gas (at 100 kPa)
Conditions:273.15 K and 100 kPa
Value:22,710 947 × 10-3m3 mol-1
Standard deviation:0.000 013 x 10-3m3 mol-1
Relative standard deviation:5.7 x 10-7
Presentation:22.710947 (13) x 10-3m3 mol-1


Molar volumes of the chemical elements

Unless otherwise noted, the specified values ​​apply under normal conditions for solids at a temperature of 298 K (24.85 ° C) and a pressure of 1 atm (1.0133 × 105 Pascal).


elementsymbolOZMolar volumeunitRemarkssource
hydrogenH122,4135L mol-1(Gas at 273.15 K, 1 atm)D4
heliumHey222,4136L mol-1(Gas at 273.15 K, 1 atm)D4
lithiumLi313,02cm3 mol-1-D1
berylliumBe4 4,85cm3 mol-1-D1
boronB.54,39cm3 mol-1-D1
carbonC.63,42cm3 mol-1diamondD1
carbonC.65,29cm3 mol-1graphiteD1
nitrogenN722,4131L mol-1(Gas at 273.15 K, 1 atm)D4
oxygenO822,4134L mol-1(Gas at 273.15 K, 1 atm)D4
fluorineF.911,20cm3 mol-1(firmly)D1
neonNo1022,4139L mol-1(Gas at 273.15 K, 1 atm)D4
sodiumN / A1123,78cm3 mol-1-D1
magnesiumMg1214,00cm3 mol-1-D1
aluminumAl1310,00cm3 mol-1-D1
SiliconSi1412,05883214(61)cm3 mol-1(22.5 ° C 0 atm)D6
Phoshor, whiteP.1517,02cm3 mol-1white phosphorusD1
Phosphorus, blackP.1511,44cm3 mol-1black phosphorusD1
sulfurS.1615,53cm3 mol-1-D1
chlorineCl1722,4129L mol-1(Gas at 273.15 K)D4
argonAr1822,4134L mol-1(Gas at 273.15 K, 1 atm)D4
potassiumK1945,94cm3 mol-1-D1
CalciumApprox2026,20cm3 mol-1-D1
ScandiumSc2115,00cm3 mol-1-D1
titaniumTi2210,64cm3 mol-1-D1
VanadiumV.238,32cm3 mol-1-D1
chromeCr24 7,23cm3 mol-1-D1
manganeseMn257,35cm3 mol-1-D1
ironFe267,09cm3 mol-1-D1
CobaltCo27 6,67cm3 mol-1-D1
nickelNi286,59cm3 mol-1-D1
copperCu297,11cm3 mol-1-D1
zincZn309,16cm3 mol-1-D1
galliumGa3111,803cm3 mol-1-D1
GermaniumGe3213,63cm3 mol-1-D1
arsenicAs3312,95cm3 mol-1-D1
seleniumSe3416,42cm3 mol-1-D1
bromineBr3519,78cm3 mol-1(firmly)D1
kryptonKr3622,4131L mol-1(Gas at 273.15 K, 1 atm)D4
RubidiumRb3755,76cm3 mol-1-D1
strontiumSr3833,94cm3 mol-1-D1
yttriumY3919,88cm3 mol-1-D1
ZirconiumZr4014,024cm3 mol-1-D1
niobiumNb4110,83cm3 mol-1-D1
molybdenumMon42 9,38cm3 mol-1-D1
TechnetiumTc438,63 cm3 mol-1-D1
RutheniumRu448,17cm3 mol-1-D1
RhodiumRh458,28cm3 mol-1-D1
palladiumPd46 8,56cm3 mol-1-D1
silverAg4710,27cm3 mol-1-D1
cadmiumCD4813,00cm3 mol-1-D1
IndiumIn4915,76cm3 mol-1-D1
tinSn5016,29cm3 mol-1-D1
antimonySb5118,19cm3 mol-1-D1
TelluriumTe5220,46cm3 mol-1-D1
IodineI.5325,72cm3 mol-1-D1
xenonXe5422,4128L mol-1(Gas at 273.15 K, 1 atm)D4
CesiumCs5570,94cm3 mol-1-D1
bariumBa5638,16cm3 mol-1-D1
LanthanumLa5722,386cm3 mol-1-D1
ceriumCe5820,69cm3 mol-1-D1
PraseodymiumPr5920,80cm3 mol-1-D1
NeodymiumNd6020,58cm3 mol-1-D1
promethiumPm6120,23cm3 mol-1-D1
SamariumSm6219,98cm3 mol-1-D1
EuropiumEu6328,97cm3 mol-1-D1
GadoliniumGd6419,90cm3 mol-1-D1
TerbiumTb6519,30cm3 mol-1-D1
DysprosiumDy6619,01cm3 mol-1-D1
holmiumHo6718,74cm3 mol-1-D1
ErbiumHe6818,46cm3 mol-1-D1
ThuliumTm6919,13cm3 mol-1-D1
ytterbiumYb7024,84cm3 mol-1-D1
lutetiumLu7117,78cm3 mol-1-D1
hafniumHf7213,44cm3 mol-1-D1
TantalumTa7310,85cm3 mol-1-D1
tungstenW.749,47cm3 mol-1-D1
rheniumre758,86cm3 mol-1-D1
osmiumOs76 8,42cm3 mol-1-D1
iridiumIr778,52cm3 mol-1-D1
platinumPt789,09cm3 mol-1-D1
goldAu7910,21cm3 mol-1-D1
mercuryEd8014,09cm3 mol-1(firmly)D1
ThalliumTl8117,22cm3 mol-1-D1
leadPb8218,26cm3 mol-1-D1
BismuthBi8321,31cm3 mol-1-D1
poloniumPo8422,97cm3 mol-1-D1
radonMarg8650,50cm3 mol-1(firmly)D1
radiumRa8841,09cm3 mol-1-D1
ActiniumAc8922,554cm3 mol-1-D1
ThoriumTh9019,80cm3 mol-1-D1
ProtactiniumPa9115,18cm3 mol-1-D1
uraniumU9212,49cm3 mol-1-D1
neptuniumNp9311,59cm3 mol-1-D1
plutoniumPooh9412,29cm3 mol-1-D1
AmericiumAt the9517,63cm3 mol-1-D1
CuriumCm9618,05cm3 mol-1-D1
BerkeliumBk9716,84cm3 mol-1-D1
CaliforniumCf9816,50cm3 mol-1-D1
EinsteiniumIt9928,52cm3 mol-1-D1

[No data is available for items not listed]


Sources and further information

[A1] - Molar. Definition in IUPAC Gold Book, 10.1351 / goldbook.M03971.


[D1] - Charles N. Singman:
Atomic volume and allotropy of the elements.
Journal of Chemical Education, (1984), DOI 10.1021 / ed061p137.

[D2] - W. L. Vos, J. A. Schouten, D. A. Young, M. Ross:
The melting curve of neon at high pressure.
Journal of Chemical Physics, (1991), DOI 10.1063 / 1.460683.

[D3] - Yuri A. Freiman, Vadim G. Manzhelii:
Physics of Cryocrystals.
Springer, Berlin, (1997), ISBN 978-1563965371.

[D4] - Michael de Podesta:
Understanding the Properties of Matter.
Routledge Chapman and Hall, (2002), ISBN 978-0415257886.

[D5] - M. N. Magomedov:
The surface energy of cryocrystals.
Technical Physics Letters, (2005), DOI 10.1134 / 1.2150892.

[D6] - Peter J. Mohr, Barry N. Taylor, David B. Newell:
CODATA recommended values ​​of the fundamental physical constants: 2006.
Reviews of Modern Physics, (2008), DOI 10.1103 / RevModPhys.80.633.

[D7] - William M. Haynes:
CRC Handbook of Chemistry and Physics.
Taylor and Francis, 93rd edition, (2012), ISBN 978-1439880494.

[D8] - CODATA Recommended Values:
Molar volume of ideal gas molar volume of ideal gas (273.15 K, 101.325 kPa).
The NIST Reference on Constants, Units, and Uncertainty. Current value under standard conditions.

[D9] - CODATA Recommended Values:
Molar volume of ideal gas (273.15 K, 100 kPa).
The NIST Reference on Constants, Units, and Uncertainty. Currently valid value.


Category: data and tables

Updated on November 11, 2017.

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