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2(NH4)2SO3 💧⚡→ 2NH2OH + (NH4)2S2O3 + H2O

Electrolysis of aqueous ammonium sulfite without water as reactant

Electrolysis of aqueous ammonium sulfite yields hydroxylamine, ammonium thiosulfate, and water (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

Electrolysis of aqueous ammonium sulfite without water as reactant

General equation

Electrolysis of aqueous solution without water as reactant
Miscible with water/Very soluble in water/Soluble in waterSelf redox agent
💧⚡
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Electrolysis of aqueous ammonium sulfite without water as reactant

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
(NH4)2SO3Ammonium sulfite2
Reducing
Very soluble in water

Products

Chemical formulaNameCoefficientTypeType in general
equation
NH2OHHydroxylamine2
Oxidized
(NH4)2S2O3Ammonium thiosulfate1
Redoxed product
H2OWater1

Thermodynamic changes

Changes in aqueous solution

Electrolysis of aqueous ammonium sulfite without water as reactant
2(NH4)2SO3Ionized aqueous solution
💧⚡
2NH2OHAqueous solution + (NH4)2S2O3Aqueous solution + H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
401.3
per 1 mol of
200.7
per 1 mol of
Hydroxylamine
200.7
401.3
per 1 mol of
401.3

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
(NH4)2SO3 (cr)-885.3[1]
(NH4)2SO3 (ai)-900.4[1]-645.0[1]197.5[1]
(NH4)2SO3 (cr)
1 hydrate
-1187.4[1]
* (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
NH2OH (cr)-114.2[1]
NH2OH (aq)-98.3[1]
(NH4)2S2O3 (aq)-917.1[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]
* (cr):Crystalline solid, (aq):Aqueous solution, (l):Liquid, (g):Gas

References

List of references

  1. 1