Periodic table of elements

Potassium sulfate [K2SO4]

SOLUBILITY:
acetone [(CH3)2CO]: ?.?.
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]: ?.?.
ethanol [C2H5OH]: ?.?.
ethanol [C2H5OH] 40%: 0,16 (40)
ethylene glycol [HOCH2CH2OH]: ?.?.

PROPERTIES:
colourless rhombic crystals
M (molar mass): 174,250 g/mol
MP (melting point): 1070 °C
MB (boiling point): 2000 °C
D (density): 2,66 (20, ?/??3, ?.)
ΔHmelt (molar enthalpy of melting): 36,65 kJ/mol
ΔH°298 (Standard molar enthalpy of reaction at 298 К): -1433,7 (?) kJ/mol
ΔG°298 (standard molar Gibbs energy of reaction at 298 К): -1316,4 (?) kJ/mol
298 (standard molar entropy at 298 К): 175,7 (?) J/(mol•К)
p (standard molar heat capacity): 130,1 (?) J/(mol•К)
Surf. tens. (surface tension): 144 (1070), 129 (1306), 107 (1656) mN/m
LD50 (median lethal doses for laboratory animals): 6600 (?????, ?/?), 1250 (????, ?/?), 6600 (????, ?/?) mg/kg

LITERARY REFERENCES:
• ??????? ?????????? ????????: ?????????????? ?????????? ????????? I-IV ?????. ??????????. - ?.: ?????, 1988. – P. 48
• ?????????? ?? ?????????????. - ?.1, ??.1. - ?.-?.: ??? ????, 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
• ?????? ?.?. ? ??. ???????? ?????????????? ??????????. ??????????. - ?.: ?????, 1983. – P. 132-133
• ????????? ?.?., ????? ?.?. ??????? ?????????? ??????????. - ?.: ?????, 1977. – P. 69

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