Periodic table of elements

Sodium sulfite [Na2SO3]

SOLUBILITY:
water [H2O]: 14,4 (0°), 26,1 (20°), 37,4 (40°), 33,2 (60°), 29 (80°), 26,6 (100°)
sulfur dioxide [SO2]: 0,023 (0°)
ethanol [C2H5OH]: low soluble

PROPERTIES:
colourless hexagonal crystals
M (molar mass): 126,040 g/mol
MP (melting point): 911 °C
ТDT (decomposing temperature): >700 °C
Decomp. to (names of the decomposition products): натрия сульфат, натрия сульфид
D (density): 2,633 (15°, g/cm3, s.)
ΔHmelt (molar enthalpy of melting): 26 kJ/mol
ΔH°298 (Standard molar enthalpy of reaction at 298 К): -1090 (s) kJ/mol
ΔG°298 (standard molar Gibbs energy of reaction at 298 К): -1002 (s) kJ/mol
298 (standard molar entropy at 298 К): 146 (s) J/(mol•К)
p (standard molar heat capacity): 120,1 (s) J/(mol•К)

LITERARY REFERENCES:
• Himicheskiy enciklopedicheskiy slovar'. - pod red. Knunyanc I.L. - M.: Sovetstkaya enciklopediya, 1983. – P. 365
• Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1 - New York: D. Van Nostrand Company, 1940. – P. 1296-1298 1300
• Stern K.H. High temperature properties and thermal decomposition of inorganic salts with oxyanions. - CRC Press, 2001. – P. 71
• Efimov A.I. i dr. Svoystva neorganicheskih soedineniy. Spravochnik. - L.: Himiya, 1983. – P. 166-167
• Rabinovich V.A., Havin Z.Ya. Kratkiy himicheskiy spravochnik. - L.: Himiya, 1977. – P. 85

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