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Properties of substance:

dinitrogen

Synonyms:

nitrogen

Group of substances:

inorganic

Physical appearance:

colorless gas

Empirical formula (Hill's system for organic substances):

N2

Structural formula as text:

N2

Molar/atomic mass: 28.0134

Melting point (°C):

-210

Boiling point (°C):

-196

Solubility (g/100 g of solvent):

1-butanol: 0.0173 (25°C) [Ref.]
acetone: 0.0266 (25°C) [Ref.]
benzoic acid: 0.0073 (122.4°C) [Ref.]
dimethylformamide: 0.005 (25°C) [Ref.]
dimethylsulfoxide: insoluble [Ref.]
ethanol: 0.0217 (25°C) [Ref.]
methanol: 0.0239 (25°C) [Ref.]
methanol: 0.0245 (50°C) [Ref.]
perfluoro-n-heptane: 0.02906 (0°C) [Ref.]
perfluoro-n-heptane: 0.02834 (25°C) [Ref.]
perfluoro-n-heptane: 0.02754 (50°C) [Ref.]
perfluoromethylcyclohexane: 0.02553 (25°C) [Ref.]
perfluorotributylamine: 0.01482 (10.68°C) [Ref.]
perfluorotributylamine: 0.01467 (20.41°C) [Ref.]
perfluorotributylamine: 0.01462 (25°C) [Ref.]
perfluorotributylamine: 0.01455 (30.45°C) [Ref.]
sulfur dioxide: very soluble [Ref.]
water: 0.00294 (0°C) [Ref.]
water: 0.00233 (10°C) [Ref.]
water: 0.00198 (20°C) [Ref.]
water: 0.00179 (25°C) [Ref.]
water: 0.00168 (30°C) [Ref.]
water: 0.00148 (40°C) [Ref.]
water: 0.00136 (50°C) [Ref.]
water: 0.0128 (60°C) [Ref.]
water: 0.0012 (80°C) [Ref.]
water: 0.00119 (100°C) [Ref.]

Numerical data:

Thermal conductivity (W/m·K): 0.02428
Polarizability of molecules (nm3): 0.00174
Ionization Potentials (Electronvolts): 15.58

Density:

1.0265 (-252.2°C, g/cm3)
0.8792 (-210°C, d4)
0.808 (-196°C, g/cm3)
0.0012506 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1, Ref.2]
    5Zn + 12HNO3 (6-10%) → 5Zn(NO3)2 + N2 + 6H2O

Reactions:

  1. [Ref.1, Ref.2aster]
    6Li + N2 → 2Li3N
  2. Yeild 30%. [Ref.1]
    N2 + 3F2 → 2NF3
  3. [Ref.1]
    N2 + 4V(OH)2 + 4H2O → N2H4 + 4V(OH)3
  4. [Ref.1]
    2V + N2 → 2VN
  5. [Ref.1, Ref.2]
    6Na + N2 → 2Na3N
  6. [Ref.1]
    N2 → 2N
  7. [Ref.1, Ref.2]
    N2 + 3H2 → 2NH3
  8. [Ref.1, Ref.2aster]
    3Mg + N2 → Mg3N2
  9. [Ref.1]
    N2 + O2 → 2NO

Half-life:

107N = 0.0002 as ()
117N = 0.00059 as (p (100%))
11m7N = 0.00069 as (p (100%))
127N = 11 ms (β+ (100%); mass excess 17338,1 keV)
137N = 9.965 min (β+ (100%))
147N = stable (mass excess 2863,417 keV (isotopic abundance 99,632%))
157N = stable (mass excess 101,438 keV (isotopic abundance 0,368%))
167N = 7.13 s (β- (100%))
177N = 4.173 s (β- (100%))
187N = 622 ms (β- (100%))
197N = 271 ms (β- (100%))
207N = 130 ms (β- (100%))
217N = 87 ms (β- (100%))
227N = 13.9 ms (β- (100%))
237N = 14.5 ms (β- (100%))
247N = < 52 ns ()
257N = < 260 ns ()

Vapour pressure (Torr):

1 (-226°C)
10 (-219°C)
100 (-210°C)

Electrode potential:

N2 + 6H+ + 6e- → 2NH3(газ), E = 0.057 V (water, 25°C)
N2 + 8H+ + 6e- → 2NH4+, E = 0.275 V (water, 25°C)

Permittivity (dielectric constant):

1.000528 (25°C)

Viscosity (mPa·s):

0.0165 (0°C)
0.0208 (100°C)
0.0246 (200°C)
0.0311 (400°C)
0.0366 (600°C)

Speed sound (m/s):

334 (0°C, aggregative state - gas)
349 (19.1°C, aggregative state - gas)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

0 (g)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

0 (g)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

199.9 (g)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

29.1 (g)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

0.721

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

5.59

Gas phase basicity ΔbaseG (298 K, kJ/mol)

-464.5 (g) [Ref.]

Critical temperature (°C):

-149.9

Critical pressure (MPa):

3.905

Critical density (g/cm3):

0.304

References:

  1. Jabloniec, A., Horstmann, S., Gmehling, J. Experimental Determination and Calculation of Gas Solubility Data for Nitrogen in Different Solvents / Industrial and Engineering Chemistry Research. - 2007. - Vol. 46, No. 13. - pp. 4654-4659 [DOI: 10.1021/ie061258m]
  2. Rubin Battino, Timothy R. Rettich, and Toshihiro Tominaga The Solubility of Nitrogen and Air in Liquids / Journal of Physical and Chemical Reference Data. - 1984. - Vol. 13, No.2. - pp. 583-600 [DOI: 10.1063/1.555713]
  3. Nuclear Physics A. - 2003. - vol.729, Issue 1, 1 December. - pp. 28-31
  4. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1015-1027
  5. Волынец В.Ф., Волынец М.П. Аналитическая химия азота. - М.: Наука, 1977. - pp. 7-17 [Russian]
  6. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 50 [Russian]
  7. Девяткин В.В., Ляхова Ю.М. Химия для любознательных, или о чем не узнаешь на уроке. - Ярославль: Академия Холдинг, 2000. - pp. 30 [Russian]
  8. Деньгуб В.М., Смирнов В.Г. Единицы величин. Словарь-справочник. - М.: Издательство стандартов, 1990. - pp. 56-57 [Russian]
  9. Карапетьянц М.Х., Дракин С.И. Общая и неорганическая химия. - М.: Химия, 1981. - pp. 392-395, 411 [Russian]
  10. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 382-383, 387-388 [Russian]
  11. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 27, 50 [Russian]
  12. Спицын В.И., Мартыненко Л.И. Неорганическая химия. - Ч.1. - М.: ИМУ, 1991. - pp. 101-107 [Russian]
  13. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 557-568 [Russian]
  14. Успехи химии. - 1974. - Т.43, №5. - pp. 863-902 [Russian]
  15. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 58-59 [Russian]
  16. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 15 [Russian]

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