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Properties of substance:

potassium sulfite

Group of substances:

inorganic

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

K2O3S

Structural formula as text:

K2SO3

Molar/atomic mass: 158.26

Decomposition temperature (°C):

600

Solubility (g/100 g of solvent):

ethanol: sparingly soluble [Ref.]
sulfur dioxide: 0.025 (0°C) [Ref.]
water: 105.8 (0.1°C) [Ref.]
water: 105.6 (24°C) [Ref.]
water: 107.9 (54.4°C) [Ref.]
water: 112.2 (97.2°C) [Ref.]

Reactions of synthesis:

  1. [Ref.1aster]
    2KOH + SO2 → K2SO3 + H2O

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-83
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 123 [Russian]
  3. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 162 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru