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Properties of substance:

iron(II) chromite

Group of substances:

inorganic

Physical appearance:

black cubic crystals

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

Cr2FeO4

Structural formula as text:

FeCr2O4

Molar/atomic mass: 223.835

Melting point (°C):

2153

CAS №: 1308-31-2

Solubility (g/100 g of solvent):

water: insoluble [Ref.]

Density:

5 (20°C, g/cm3)

Reactions:

  1. [Ref.1, Ref.2]
    4Fe(CrO2)2 + 8Na2CO3 + 7O2 → 8Na2CrO4 + 2Fe2O3 + 8CO2

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

-1454 (s)

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

-1353 (s)

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

146 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-68
  2. Волков А.И., Жарский И.М. Большой химический справочник. - Минск: Современная школа, 2005. - pp. 145 [Russian]
  3. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 118-119 [Russian]
  4. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 99 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru