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Properties of substance:
potassium tetrathionate
Group of substances:
inorganic
Physical appearance:
colorless monoclinic crystals
Empirical formula (Hill's system for organic substances):
K
2
O
6
S
4
Structural formula as text:
K2S4O6
Molar/atomic mass: 302.45
Decomposition temperature (°C):
500
Solubility (g/100 g of solvent):
ethanol
: insoluble [
Ref.
]
water
: 14.4 (0°C) [
Ref.
]
water
: 30.2 (20°C) [
Ref.
]
Density:
2.3 (20°C, g/cm
3
)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-1766 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
309.7 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
230.8 (s)
References:
Волков А.И., Жарский И.М. Большой химический справочник. - Минск: Современная школа, 2005. - pp. 161 [Russian]
Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 132-133 [Russian]
Киргинцев А.Н., Трушникова Л.Н., Лаврентьева В.Г. Растворимость неорганических веществ в воде. - Л.: Химия, 1972. - pp. 129 [Russian]
Лидин Р.А., Молочко В.А., Андреева Л.Л. Химические свойства неорганических веществ. - М.: Химия, 2000. - pp. 229-230 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru