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Properties of substance:

potassium silicate

Synonyms:

potassium metasilicate

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

K2O3Si

Structural formula as text:

K2SiO3

Molar/atomic mass: 154.28

Melting point (°C):

976

Solubility (g/100 g of solvent):

ethanol: insoluble [Ref.]
water: 0.12 (-0.082°C) [Ref.]

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-1548.08 (s) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-1455.733 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

146.1 (s) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

118.431 (s) [Ref.]

Enthalpy (heat) of fusion ΔfusH (kJ/mol)

50.208 (s) [Ref.]

References:

  1. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 69 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru