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Properties of substance:

silver sulfide beta form

Group of substances:

inorganic

Physical appearance:

black rhombic crystals

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

Ag2S

Structural formula as text:

Ag2S

Molar/atomic mass: 247.8

Melting point (°C):

842

Density:

7.326 (20°C, g/cm3)

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

-30 (s)

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

-40 (s)

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

151 (s)

References:

  1. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - 2-е изд. - Л.: Химия, 1978. - pp. 100 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru