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2(NH4)2SO3 ๐Ÿ’งโšกโ†’ (NH4)2S2O3 + 2NH3โ†‘ + O2โ†‘ + H2O

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Electrolysis of aqueous ammonium sulfite without water as reactant
2(NH4)2SO3Ammonium sulfite
๐Ÿ’งโšก
โŸถ
(NH4)2S2O3Ammonium thiosulfate + 2NH3โ†‘Ammonia + O2โ†‘Oxygen + H2OWater

Electrolysis of aqueous ammonium sulfite yields ammonium thiosulfate, ammonia, oxygen, 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
2(NH4)2SO3Ammonium sulfite
๐Ÿ’งโšก
โŸถ
(NH4)2S2O3Ammonium thiosulfate + 2NH3โ†‘Ammonia + O2โ†‘Oxygen + H2OWater

General equation

Electrolysis of aqueous solution without water as reactant
Miscible with water/Very soluble in water/Soluble in waterSelf redox agent
๐Ÿ’งโšก
โŸถ
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
(NH4)2S2O3Ammonium thiosulfate1
Redoxed product
โ€“
NH3Ammonia2
โ€“
โ€“
O2Oxygen1
Oxidized
โ€“
H2OWater1
โ€“
โ€“

Thermodynamic changes

Changes in aqueous solution (1)

Electrolysis of aqueous ammonium sulfite without water as reactant
2(NH4)2SO3Ionized aqueous solution
๐Ÿ’งโšก
โŸถ
(NH4)2S2O3Aqueous solution + 2NH3โ†‘Gas + O2โ†‘Gas + H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
505.7โ€“โ€“โ€“
per 1 mol of
252.8โ€“โ€“โ€“
505.7โ€“โ€“โ€“
per 1 mol of
252.8โ€“โ€“โ€“
per 1 mol of
505.7โ€“โ€“โ€“
per 1 mol of
505.7โ€“โ€“โ€“

Changes in aqueous solution (2)

Electrolysis of aqueous ammonium sulfite without water as reactant
2(NH4)2SO3Ionized aqueous solution
๐Ÿ’งโšก
โŸถ
(NH4)2S2O3Aqueous solution + 2NH3โ†‘Gas + O2โ†‘Un-ionized aqueous solution + H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
494.0โ€“โ€“โ€“
per 1 mol of
247.0โ€“โ€“โ€“
494.0โ€“โ€“โ€“
per 1 mol of
247.0โ€“โ€“โ€“
per 1 mol of
494.0โ€“โ€“โ€“
per 1 mol of
494.0โ€“โ€“โ€“

Changes in aqueous solution (3)

Electrolysis of aqueous ammonium sulfite without water as reactant
2(NH4)2SO3Ionized aqueous solution
๐Ÿ’งโšก
โŸถ
(NH4)2S2O3Aqueous solution + 2NH3โ†‘Un-ionized aqueous solution + O2โ†‘Gas + H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
437.3โ€“โ€“โ€“
per 1 mol of
218.7โ€“โ€“โ€“
437.3โ€“โ€“โ€“
per 1 mol of
218.7โ€“โ€“โ€“
per 1 mol of
437.3โ€“โ€“โ€“
per 1 mol of
437.3โ€“โ€“โ€“

Changes in aqueous solution (4)

Electrolysis of aqueous ammonium sulfite without water as reactant
2(NH4)2SO3Ionized aqueous solution
๐Ÿ’งโšก
โŸถ
(NH4)2S2O3Aqueous solution + 2NH3โ†‘Un-ionized aqueous solution + O2โ†‘Un-ionized aqueous solution + H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
425.6โ€“โ€“โ€“
per 1 mol of
212.8โ€“โ€“โ€“
425.6โ€“โ€“โ€“
per 1 mol of
212.8โ€“โ€“โ€“
per 1 mol of
425.6โ€“โ€“โ€“
per 1 mol of
425.6โ€“โ€“โ€“

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
(NH4)2SO3 (cr)-885.3[1]โ€“โ€“โ€“
(NH4)2SO3 (ai)-900.4[1]-645.0[1]197.5[1]โ€“
(NH4)2SO3 (cr)
1 hydrate
-1187.4[1]โ€“โ€“โ€“
* (cr):Crystalline solid, (ai):Ionized aqueous solution

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
(NH4)2S2O3 (aq)-917.1[1]โ€“โ€“โ€“
NH3 (g)-46.11[1]-16.45[1]192.45[1]35.06[1]
NH3 (ao)-80.29[1]-26.50[1]111.3[1]โ€“
O2 (g)0[1]0[1]205.138[1]29.355[1]
O2 (ao)-11.7[1]16.4[1]110.9[1]โ€“
H2O (cr)โ€“โ€“โ€“โ€“
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]
* (aq):Aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (l):Liquid

References

List of references

  1. 1
    Janiel J. Reed (1989)
    The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
    National Institute of Standards and Technology (NIST)