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Properties of substance:

sodium superoxide

Group of substances:

inorganic

Physical appearance:

orange-yellow cubic crystals

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

NaO2

Structural formula as text:

NaO2

Molar/atomic mass: 54.99

Decomposition temperature (°C):

100-270

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

-260.2 (s)

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

-218.4 (s)

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

115.9 (s)

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

72.1 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-16
  2. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 89 [Russian]
  3. Лидин Р.А., Молочко В.А., Андреева Л.Л. Химические свойства неорганических веществ. - М.: Химия, 2000. - pp. 21 [Russian]
  4. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 227-228 [Russian]
  5. Химическая технология неорганических веществ. - Кн.1, под ред. Ахметова Т.Г. - М.: Высшая школа, 2002. - pp. 8-10 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru