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Properties of substance:

rhodium(III) oxide

Group of substances:

inorganic

Physical appearance:

gray hexagonal crystals

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

O3Rh2

Structural formula as text:

Rh2O3

Molar/atomic mass: 253.809

Decomposition temperature (°C):

1000

Solubility (g/100 g of solvent):

water: insoluble [Ref.]

Density:

8.2 (20°C, g/cm3)

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

    -356 (s)

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

    106 (s)

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

    103.8 (s)

    References:

    1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 180-181 [Russian]
    2. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 270 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru