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Properties of substance:

plutonium

Group of substances:

inorganic

Physical appearance:

metal

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

Pu

Structural formula as text:

Pu

Molar/atomic mass: 239.05

Melting point (°C):

640

Boiling point (°C):

3235

Solubility (g/100 g of solvent):

mercury: 0.015 (20°C) [Ref.]
mercury: 0.64 (325°C) [Ref.]
water: reaction [Ref.]

Numerical data:

Year of discovery: 1940

Density:

19.82 (25°C, g/cm3)
16.26 (640°C, g/cm3)
16.62 (664°C, g/cm3)
16.43 (788°C, g/cm3)

Vapour pressure (Torr):

0.01 (1463°C)
0.1 (1704°C)
1 (1955°C)
10 (2278°C)
100 (2710°C)

Electrode potential:

Pu3+ + 3e- → Pu, E = -2.031 V (water, 25°C)
Pu4+ + e- → Pu3+, E = 0.967 V (water, 25°C)

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

0 (s)

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

0 (s)

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

51.5 (s)

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

32 (s)

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

347 (g)

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

177.1 (g)

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

20.9 (g)

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

351

Enthalpy (heat) of fusion ΔfusH (kJ/mol)

2.824 (s) [Ref.]

References:

  1. Encyclopedia of inorganic chemistry. - editor R. Bruce King, 2 Ed., 10 volume set. - 2005
  2. Вредные химические вещества: Радиоактивные вещества. Справочник. - Л., 1990. - pp. 197 [Russian]
  3. Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 570-584 [Russian]
  4. Милюкова М.С., Гусев Н.И., Сентюрин И.Г., Скляренко И.С. Аналитическая химия плутония. - М.: Наука, 1965. - pp. 23-28 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 90, 306-307 [Russian]
  6. Руководство по неорганическому синтезу. - Т.4, под ред. Брауэра Г. - М.: Мир, 1985. - pp. 1372-1376 [Russian]
  7. Справочник по редким металлам. - М.: Мир, 1965. - pp. 511-580 [Russian]
  8. Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 580-582 [Russian]
  9. Химия актиноидов. - Т.2. - М.: Мир, 1997. - pp. 5-169 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru