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Properties of substance:

tritium

Group of substances:

inorganic

Physical appearance:

colorless gas

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

H2

Structural formula as text:

T2

Molar/atomic mass: 6.04

Melting point (°C):

-252.5

Boiling point (°C):

-248.1

Numerical data:

Year of discovery: 1934

Half-life:

31H = 12.33 y (β-)

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)):

153.22 (g)

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

29.2 (g)

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

0.234

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

1.39

Enthalpy (heat) of dissociation ΔdissH (kJ/mol)

446.9 (g) [Ref.]

Critical temperature (°C):

-229.45

Critical pressure (MPa):

2.11

Critical density (g/cm3):

0.112

References:

  1. Беловодский Л.Ф., Гаевой В.К., Гришмановский В.И. Тритий. - М.: Энергоатомиздат, 1985 [Russian]
  2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 42-43, 46-49 [Russian]
  3. Ленский Л.А. Физика и химия трития. - М.: Энергоиздат, 1981 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 59 [Russian]
  5. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 5-7 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru