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Properties of substance:
copper(II) hydroxide
Synonyms:
cupric hydroxide
Group of substances:
inorganic
Physical appearance:
powder
Empirical formula (Hill's system for organic substances):
H
2
CuO
2
Structural formula as text:
Cu(OH)2
Molar/atomic mass: 97.56
Decomposition temperature (°C):
100-400
Solubility (g/100 g of solvent):
water
: 0.000673 (18°C) [
Ref.
]
Density:
3.37 (20°C, g/cm
3
)
Reactions of synthesis:
[
Ref.1
]
CuSO
4
* 5H
2
O + 2NaOH → Cu(OH)
2
+ Na
2
SO
4
+ 5H
2
O
Dissociation:
pK
b
(2) = 6.47 (25°C, water)
pK
sp
(0) = 19.66 (20°C, water)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-444.3 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-359.4 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
84 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
96 (s)
References:
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 494-495
Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 270-271 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - 2-е изд. - Л.: Химия, 1978. - pp. 80 [Russian]
Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 315 [Russian]
Чалый В.П. Гидроокиси металлов (закономерности образования, состав, структура и свойства). - Киев: Наукова думка, 1972. - pp. 52-58 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru