Periodic table of elements

Potassium sulfate [K2SO4]

SOLUBILITY:
acetone [(CH3)2CO]: insoluble
water [H2O]: 7,18 (0°), 9,3 (10°), 11,1 (20°), 12 (25°), 13 (30°), 14,8 (40°), 18,2 (60°), 21,4 (80°), 24,1 (100°)
hydrazine [N2H4]: 5 (20°)
hydroxylamine [NH2OH]: 3,5 (18°)
formic acid [HCO2H] 95%: 36,5 (21°)
hydrogen peroxide [H2O2]: 96,1 (0°)
carbon disulfide [CS2]: insoluble
ethanol [C2H5OH]: insoluble
ethanol [C2H5OH] 40%: 0,16 (40°)
ethylene glycol [HOCH2CH2OH]: insoluble

PROPERTIES:
colourless rhombic crystals
M (molar mass): 174,250 g/mol
MP (melting point): 1070 °C
BP (boiling point): 2000 °C
D (density): 2,66 (20°, g/cm3, s.)
ΔHmelt (molar enthalpy of melting): 36,65 kJ/mol
ΔH°298 (Standard molar enthalpy of reaction at 298 К): -1433,7 (s) kJ/mol
ΔG°298 (standard molar Gibbs energy of reaction at 298 К): -1316,4 (s) kJ/mol
298 (standard molar entropy at 298 К): 175,7 (s) J/(mol•К)
p (standard molar heat capacity): 130,1 (s) J/(mol•К)
Surf. tens. (surface tension): 144 (1070°), 129 (1306°), 107 (1656°) mN/m
LD50 (median lethal doses for laboratory animals): 6600 (rats, i/g), 1250 (mice, i/p), 6600 (mice, i/g) mg/kg

LITERARY REFERENCES:
• Vrednye himicheskie veschestva: Neorganicheskie soedineniya elementov I-IV grupp. Spravochnik. - L.: Himiya, 1988. – P. 48
• Spravochnik po rastvorimosti. - T.1, Kn.1. - M.-L.: IAN SSSR, 1961. – P. 162-163
• Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1 - New York: D. Van Nostrand Company, 1940. – P. 859-879
• Efimov A.I. i dr. Svoystva neorganicheskih soedineniy. Spravochnik. - L.: Himiya, 1983. – P. 132-133
• Rabinovich V.A., Havin Z.Ya. Kratkiy himicheskiy spravochnik. - L.: Himiya, 1977. – P. 69

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