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Properties of substance:

potassium perchlorate


Physical appearance:

colorless rhombic crystals

Empirical formula (Hill's system):

ClKO4

Structural formula:

KClO4

Molar/atomic mass: 138.55

Melting point (°C):

610

Solubility (g/100 g of solvent):

1-butanol: 0.0045 (25°C)
nitric acid: 1.01 (-0.401°C)
liquid ammonia: 39.55 (-33°C)
liquid ammonia: 47.46 (0°C)
liquid ammonia: 48.1 (25°C)
acetone: 0.16 (25°C)
water: 0.76 (0°C)
water: 1.06 (10°C)
water: 1.8 (20°C)
water: 2.5 (25°C)
water: 4.8 (40°C)
water: 12.3 (70°C)
water: 22 (100°C)
deuterium oxide: 1.78 (25°C)
diethyl ether: insoluble
i-butanol: 0.005 (25°C)
methanol: 0.105 (25°C)
propanol: 0.01 (25°C)
acetic acid: 0.00258 (25°C)
hydrogen fluoride : 10.6
perchloric acid anhydrous: 4.26 (0°C)
ethanol: 0.0047 (0°C)
ethanol: 0.012 (25°C)
ethanol 90%: 0.036 (25.2°C)
ethyl acetate: 0.0015 (25°C)
ethanediol: 1.03 (25°C)

Density:

2.52 (20°C, g/cm3)

    Dissociation:

    pПР (0) = 2 (20°C, water)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -430.1 (s)

    Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

    -300.4 (s)

    Standard molar entropy S0 (298.15 K, J/mol·K):

    151 (s)

    Molar heat capacity at constant pressure Cp (298.15 K, J/mol·K):

    112.4 (s)

    References:

    1. Journal of the American Chemical Society. - 1923. - Vol. 45, No. 2. - pp. 293
    2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 789-795
    3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 238
    4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977
    5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 695-696
    6. Якименко Л.М. Производство хлора, каустической соды и неорганических хлорпродуктов. - М.: Химия, 1974. - pp. 433-434, 455-457
    7. Якименко Л.М., Серышев Г.А. Электрохимический синтез неорганических соединений. - М.: Химия, 1984. - pp. 79-81
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru