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Properties of substance:
potassium peroxide
Group of substances:
inorganic
Physical appearance:
white cubic crystals
Empirical formula (Hill's system for organic substances):
K
2
O
2
Structural formula as text:
K2O2
Molar/atomic mass: 110.2
Melting point (°C):
490
Solubility (g/100 g of solvent):
water
: reaction [
Ref.
]
Density:
2.18 (20°C, g/cm
3
)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-495.8 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-429.8 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
113 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
100.16 (s)
References:
Вольнов И.И. Перекисные соединения щелочных металлов. - М.: Наука, 1980. - pp. 63-68 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 69 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru