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4Co2+ + 4H2O → Co4(OH)44+ + 4H+

Reaction of cobalt(II) ion and water
4Co2+Cobalt(II) ion + 4H2OWater
Co4(OH)44+Tetracobalt(II) tetrahydroxide ion + 4H+Hydrogen ion

The reaction of cobalt(II) ion and water yields tetracobalt(II) tetrahydroxide ion and hydrogen ion (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related reactions
  5. 5Related categories

Reaction data

Chemical equation

Reaction of cobalt(II) ion and water
4Co2+Cobalt(II) ion + 4H2OWater
Co4(OH)44+Tetracobalt(II) tetrahydroxide ion + 4H+Hydrogen ion

General equation

Reaction of ion and water with generating hydrogen ion
Cation/AnionBrønsted acid + H2OBrønsted base
Proton accepting ion/BaseConjugate base + H+Conjugate acid

Oxidation state of each atom

Reaction of cobalt(II) ion and water

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Co2+Cobalt(II) ion4
Brønsted acid
Cation
H2OWater4
Brønsted base
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
Co4(OH)44+Tetracobalt(II) tetrahydroxide ion1
Conjugate base
Proton accepting ion
H+Hydrogen ion4
Conjugate acid
Hydrogen ion

Thermodynamic changes

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
Co2+ (g)2844.20[1]
Co2+ (ao)-58.2[1]-54.4[1]-113[1]
H2O (cr)
H2O (l)-285.830[1]-237.129[1]69.91[1]75.291[1]
H2O (g)-241.818[1]-228.572[1]188.825[1]33.577[1]
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (l):Liquid

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
Co4(OH)44+
H+ (g)1536.202[1]
H+ (ao)0[1]0[1]0[1]0[1]
* (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

  1. 1