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Properties of substance:
potassium ferricyanide
Synonyms:
potassium hexacyanoferrate(III)
Group of substances:
inorganic
Physical appearance:
rhombic crystals
Empirical formula (Hill's system for organic substances):
C
6
FeK
3
N
6
Structural formula as text:
K3[Fe(CN)6]
Molar/atomic mass: 329.25
Decomposition temperature (°C):
350
Solubility (g/100 g of solvent):
acetone
: insoluble [
Ref.
]
deuterium oxide
: 38.7 (25°C) [
Ref.
]
dimethylformamide
: 0.05 (25°C) [
Ref.
]
ethanol
: insoluble [
Ref.
]
ethyl acetate
: insoluble [
Ref.
]
formamide
: 2.7 (25°C) [
Ref.
]
hydrazine
: 2 (20°C) [
Ref.
]
methanol
: insoluble (15°C) [
Ref.
]
methanol
: 0.31 (66°C) [
Ref.
]
water
: 29.9 (0°C) [
Ref.
]
water
: 38.3 (10°C) [
Ref.
]
water
: 46 (20°C) [
Ref.
]
water
: 48.8 (25°C) [
Ref.
]
water
: 52.7 (30°C) [
Ref.
]
water
: 59.5 (40°C) [
Ref.
]
water
: 70.9 (60°C) [
Ref.
]
water
: 81.8 (80°C) [
Ref.
]
water
: 91.6 (100°C) [
Ref.
]
Density:
1.85 (25°C, g/cm
3
)
Reactions:
[
Ref.1
,
Ref.2
]
K
3
Fe(CN)
6
+ 3HCl → H
3
Fe(CN)
6
+ 3KCl
Electrode potential:
Fe(CN)
6
3-
+ e
-
→ Fe(CN)
6
4-
, E = 0.36 V (water, 25°C)
Dissociation:
pK
instab
(0) = 31 (25°C, water)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-173.2 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-51.9 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
420.1 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
316.3 (s)
Neel temperature (K):
0.129
References:
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 720
Бьюкенен Дж. Г. Цианистые соединения и их анализ. - Л., 1933. - pp. 70-71 [Russian]
Коттон Ф., Уилкинсон Дж. Современная неорганическая химия. - Ч.3. - М.: Мир, 1969. - pp. 267 [Russian]
Краткая химическая энциклопедия. - Т. 2: Ж-Малоновый эфир. - М.: Советская энциклопедия, 1963. - pp. 354 [Russian]
Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 107 [Russian]
Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 371 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 70-71 [Russian]
Реми Г. Курс неорганической химии. - Т.2. - М., 1966. - pp. 307 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 172, 699 [Russian]
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 64-65 [Russian]
Физер Л., Физер М. Реагенты для органического синтеза. - Т. 2: Ж-Н. - М., 1970. - pp. 102-106 [Russian]
Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 594 [Russian]
Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 287 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru