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Properties of substance:

dioxygen difluoride

Synonyms:

fluorine dioxide

Physical appearance:

gas

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

F2O2

Structural formula as text:

O2F2

Molar/atomic mass: 69.996

Melting point (°C):

-154

Boiling point (°C):

-57

Destruction point (°C):

-60

Vapour pressure (Torr):

1 (-140.1°C)
10 (-119.7°C)

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

    19.2 (g)

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

    58.2 (g)

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

    277.2 (g)

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

    62.1 (g)

    Enthalpy (heat) of vaporization at boiling point ΔvapH (kJ/mol)

    19,1 (l) [Ref.]

    References:

    1. Advances in Inorganic Chemistry and Radiochemistry. - 1963. - Vol. 5. - pp. 43-44
    2. Advances in Inorganic Chemistry and Radiochemistry. - 1974. - Vol. 16. - pp. 111-112
    3. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-11
    4. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 594
    5. Никитин И.В. Химия кислородных соединений галогенов. - М.: Наука, 1986. - pp. 19-32
    6. Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 607
    7. Успехи химии. - 1971. - Т.40, №11. - pp. 1921-1924
    8. Успехи химии. - 2002. - Т.71, №2. - pp. 99-100
    9. Фтор и его соединения. – Под ред. Саймонса Дж., Т. 1. - М.: ИИЛ, 1953. - pp. 75-76
    10. Химическая энциклопедия. - Т.2. - М.: Советская энциклопедия, 1990. - pp. 389
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru