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Properties of substance:

hydrogen trisulfide

Group of substances:

inorganic

Physical appearance:

yellow oily liquid

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

H2S3

Structural formula as text:

HSSSH

Molar/atomic mass: 98.21

Melting point (°C):

-52

Boiling point (°C):

69

Decomposition temperature (°C):

69

Solubility (g/100 g of solvent):

benzene: soluble [Ref.]
carbon disulphide: soluble [Ref.]
chloroform: soluble [Ref.]

Density:

1.499 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    H2S5 → H2S3 + 2S

Refractive index (nD):

1.729 (20°C)

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

-15.08 (l)

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

123.5 (l)

References:

  1. Holleman A.F., Wiberg E., Wiberg N. Anorganische Chemie. - 103 Auflage, Band 1. - Berlin: Walter de Gruyter, 2017. - pp. 628
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 165 [Russian]
  3. Морачевский А.Г., Сладков И.Б. Физико-химические свойства молекулярных неорганических соединений. - Л.: Химия, 1987. - pp. 59 [Russian]
  4. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 456 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru