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Properties of substance:
lead
Group of substances:
inorganic
Physical appearance:
gray cubic metal
Empirical formula (Hill's system for organic substances):
Pb
Structural formula as text:
Pb
Molar/atomic mass: 207.2
Melting point (°C):
327.4
Boiling point (°C):
1745
Solubility (g/100 g of solvent):
lead iodide
: 0.01 (440°C) [
Ref.
]
lead iodide
: 0.18 (700°C) [
Ref.
]
lead(II) chloride
: 0.015 (600°C) [
Ref.
]
lead(II) chloride
: 0.04 (700°C) [
Ref.
]
mercury
: 1.32 (18°C) [
Ref.
]
water
: 0.0000311 [
Ref.
]
Numerical data:
Superconducting temperature (K): 7.1999
Density:
11.336 (20°C, g/cm
3
)
10.686 (327.4°C, d
4
)
Vapour pressure (Torr):
1 (981°C)
Electrode potential:
Pb
4+
+ 2e
-
→ Pb
2+
, E = 1.694 V (water, 25°C)
Pb
4+
+ e
-
→ Pb
3+
, E = 1.8 V (water, 25°C)
Surface tension (mN/m):
445 (350°C)
Speed sound (m/s):
1020 (20°C, aggregative state - crystals, в стержне)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
0 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
0 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
64.81 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
26.44 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
4.77
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
177.7
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
195.1 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
175.3 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
20.8 (g)
References:
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1364-1365
Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 350 [Russian]
Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
Неорганические синтезы. - Сб. 1. - М.: ИИЛ, 1951. - pp. 10 [Russian]
Полянский Н.Г. Свинец. - М.: Наука, 1986. - pp. 18-20 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 94 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 596 [Russian]
Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 595, 598 [Russian]
Успехи химии. - 1997. - Т.66, №2. - pp. 112 [Russian]
Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 299-301 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru