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2NiSO4 + 18e → 2Ni + S22− + 8O2−

Reduction of nickel(II) sulfate
2NiSO4Nickel(II) sulfate + 18eElectron
2NiNickel + S22−Disulfide ion + 8O2−Oxide ion

Reduction of nickel(II) sulfate yields nickel, disulfide ion, and oxide 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) sulfate
2NiSO4Nickel(II) sulfate + 18eElectron
2NiNickel + S22−Disulfide ion + 8O2−Oxide ion

General equation

Reduction of reducible species
ReactantOxidizing agent + e
ProductReduction product

Oxidation state of each atom

Reduction of nickel(II) sulfate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
NiSO4Nickel(II) sulfate2
Oxidizing
eElectron18
Electron

Products

Chemical formulaNameCoefficientTypeType in general
equation
NiNickel2
Reduced
S22−Disulfide ion1
Reduced
O2−Oxide ion8

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
NiSO4 (cr)-872.91[1]-759.7[1]92[1]138[1]
NiSO4 (ai)-963.2[1]-790.3[1]-108.8[1]
NiSO4 (ao)-949.3[1]-803.3[1]-18.0[1]
NiSO4 (cr)
4 hydrate
-2104.1[1]
NiSO4 (cr)
6 hydrate
α, tetragonal, green
-2682.82[1]-2224.61[1]334.47[1]327.86[1]
NiSO4 (cr)
6 hydrate
β, monoclinic, blue
-2672.3[1]
NiSO4 (cr)
7 hydrate
-2976.33[1]-2461.83[1]378.94[1]364.59[1]
e
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-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]
S22− (ao)30.1[1]79.5[1]28.5[1]
O2−
* (cr):Crystalline solid, (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

  1. 1