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2Ni(OH)2 + 8e → 2Ni + H2O + 3O2− + 2H

Reduction of nickel(II) hydroxide
2Ni(OH)2Nickel(II) hydroxide + 8eElectron
2NiNickel + H2OWater + 3O2−Oxide ion + 2HHydride ion

Reduction of nickel(II) hydroxide yields nickel, water, oxide ion, and hydride ion (Other reactions are here). This reaction is an oxidation-reduction 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

Reduction of nickel(II) hydroxide
2Ni(OH)2Nickel(II) hydroxide + 8eElectron
2NiNickel + H2OWater + 3O2−Oxide ion + 2HHydride ion

General equation

Reduction of reducible species
ReactantOxidizing agent + e
ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Ni(OH)2Nickel(II) hydroxide2
Oxidizing
eElectron8
Electron

Products

Chemical formulaNameCoefficientTypeType in general
equation
NiNickel2
Reduced
H2OWater1
O2−Oxide ion3
HHydride ion2
Reduced

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
Ni(OH)2 (cr)-529.7[1]-447.2[1]88[1]
Ni(OH)2 (ai)-513.8[1]-360.2[1]-150.2[1]
e
* (cr):Crystalline solid, (ai):Ionized aqueous solution

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
Ni (cr)0[1]0[1]29.87[1]26.07[1]
Ni (g)429.7[1]384.5[1]182.193[1]23.359[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]
O2−
H (g)138.99[1]
* (cr):Crystalline solid, (g):Gas, (l):Liquid

References

List of references

  1. 1