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Properties of substance:

potassium oxide


Physical appearance:

colorless crystals

Empirical formula (Hill's system):

K2O

Structural formula:

K2O

Molar/atomic mass: 94.2

Destruction point (°C):

300

Solubility (g/100 g of solvent):

water: reaction
diethyl ether: soluble
ethanol: soluble

Gigroscopic:

yes

Density:

2.32 (20°C, g/cm3)

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

    -363.2 (s)

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

    -322.1 (s)

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

    94.1 (s)

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

    83.7 (s)

      References:

      1. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 69
      2. Справочник химика. - Т.2. - Л.-М.: Химия, 1964. - pp. 84-85
      3. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советсткая энциклопедия, 1983. - pp. 233
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        © Collected Kiper Ruslan Anatolievich, burewestnik@mail.ru