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Properties of substance:

potassium hydrogen sulfide

Group of substances:

inorganic

Physical appearance:

colorless trigonal crystals

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

HKS

Structural formula as text:

KHS

Molar/atomic mass: 72.17

Melting point (°C):

455

Solubility (g/100 g of solvent):

ethanol: soluble [Ref.]
water: very soluble [Ref.]
water: reaction (100°C) [Ref.]

Hygroscopic:

yes

Density:

1.69 (20°C, g/cm3)

Reactions:

  1. Yeild 89%. [Ref.1]
    C2H5Br + KSH → C2H5SH + KBr
  2. Yeild 69%. [Ref.1]
    BrCH2CH2Br + 2KSH → HSCH2CH2SH + 2KBr

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

-264.4 (s)

References:

  1. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 69 [Russian]
  2. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 289 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru