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Properties of substance:

lead(II) iodide

Synonyms:

lead iodide

Group of substances:

inorganic

Physical appearance:

yellow hexagonal crystals

Empirical formula (Hill's system for organic substances):

I2Pb

Structural formula as text:

PbI2

Molar/atomic mass: 461.009

Melting point (°C):

412

Boiling point (°C):

872

Solubility (g/100 g of solvent):

acetone: 0.02 (59°C) [Ref.]
ammonia liquid : very soluble [Ref.]
amyl alcohol: 0.02 (133.5°C) [Ref.]
aniline: 0.5 (13°C) [Ref.]
aniline: 1.11 (184°C) [Ref.]
benzonitrile: sparingly soluble [Ref.]
carbon disulphide: insoluble [Ref.]
ethanol: insoluble [Ref.]
ethyl acetate: insoluble [Ref.]
formic acid 95%: 0.25 (19.8°C) [Ref.]
hydrazine: reaction 2 (20°C) [Ref.]
methyl acetate: difficulty soluble [Ref.]
pyridine: 0.166 (-37°C) [Ref.]
pyridine: 0.2 (0°C) [Ref.]
pyridine: 0.208 (15°C) [Ref.]
pyridine: 0.188 (35°C) [Ref.]
pyridine: 0.34 (98°C) [Ref.]
sulfur dioxide: 0.009 (0°C) [Ref.]
water: 0.044 (0°C) [Ref.]
water: 0.061 (15°C) [Ref.]
water: 0.076 (25°C) [Ref.]
water: 0.09 (30°C) [Ref.]
water: 0.17 (50°C) [Ref.]
water: 0.3 (80°C) [Ref.]
water: 0.436 (100°C) [Ref.]

Density:

6.16 (20°C, g/cm3)

Vapour pressure (Torr):

0.1 (404°C)
1 (479°C)
10 (571°C)
100 (700°C)

    Dissociation:

    pKsp (0) = 8.09 (20°C, water)

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

    -175.2 (s)

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

    -173.6 (s)

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

    175.35 (s)

    Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

    21.1

    Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

    100

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

    -9 (g)

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

    354 (g)

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

    57.3 (g)

    References:

    1. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 450-451
    2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1398-1400
    3. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 637 [Russian]
    4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 94 [Russian]
    5. Реми Г. Курс неорганической химии. - Т.1. - М., 1963. - pp. 597 [Russian]
    6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 320-321, 892-893 [Russian]
    7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 233 [Russian]
    8. Энциклопедия для детей. - Т.17: Химия. - М.: Аванта+, 2004. - pp. 218 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru