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NaSCN + 7H2O ๐Ÿ’งโšกโ†’ NaHSO4 + NH2OH + CO2โ†‘ + 5H2โ†‘

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Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNSodium thiocyanate + 7H2OWater
๐Ÿ’งโšก
โŸถ
NaHSO4Sodium hydrogensulfate + NH2OHHydroxylamine + CO2โ†‘Carbon dioxide + 5H2โ†‘Hydrogen

Electrolysis of aqueous sodium thiocyanate yields sodium hydrogensulfate, hydroxylamine, carbon dioxide, and hydrogen (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 sodium thiocyanate with water as oxidizing agent
NaSCNSodium thiocyanate + 7H2OWater
๐Ÿ’งโšก
โŸถ
NaHSO4Sodium hydrogensulfate + NH2OHHydroxylamine + CO2โ†‘Carbon dioxide + 5H2โ†‘Hydrogen

General equation

Electrolysis of aqueous solution with water as oxidizing agent
Miscible with water/Very soluble in water/Soluble in waterReducing agent + H2OOxidizing agent
๐Ÿ’งโšก
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
NaSCNSodium thiocyanate1
Reducing
Very soluble in water
H2OWater7
Oxidizing
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
NaHSO4Sodium hydrogensulfate1
Oxidized
โ€“
NH2OHHydroxylamine1
Oxidized
โ€“
CO2Carbon dioxide1
โ€“
โ€“
H2Hydrogen5
Reduced
โ€“

Thermodynamic changes

Changes in standard condition

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNCrystalline solid + 7H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHSO4Crystalline solid + NH2OHCrystalline solid + CO2โ†‘Gas + 5H2โ†‘Gas
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
538.1โ€“โ€“โ€“
per 1 mol of
538.1โ€“โ€“โ€“
per 1 mol of
76.87โ€“โ€“โ€“
538.1โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
538.1โ€“โ€“โ€“
per 1 mol of
538.1โ€“โ€“โ€“
per 1 mol of
107.6โ€“โ€“โ€“

Changes in aqueous solution (1)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 7H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHSO4Ionized aqueous solution + NH2OHAqueous solution + CO2โ†‘Gas + 5H2โ†‘Gas
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
545.2โ€“โ€“โ€“
per 1 mol of
545.2โ€“โ€“โ€“
per 1 mol of
77.89โ€“โ€“โ€“
545.2โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
545.2โ€“โ€“โ€“
per 1 mol of
545.2โ€“โ€“โ€“
per 1 mol of
109.0โ€“โ€“โ€“

Changes in aqueous solution (2)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 7H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHSO4Ionized aqueous solution + NH2OHAqueous solution + CO2โ†‘Gas + 5H2โ†‘Un-ionized aqueous solution
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
524.2โ€“โ€“โ€“
per 1 mol of
524.2โ€“โ€“โ€“
per 1 mol of
74.89โ€“โ€“โ€“
524.2โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
524.2โ€“โ€“โ€“
per 1 mol of
524.2โ€“โ€“โ€“
per 1 mol of
104.8โ€“โ€“โ€“

Changes in aqueous solution (3)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 7H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHSO4Ionized aqueous solution + NH2OHAqueous solution + CO2โ†‘Un-ionized aqueous solution + 5H2โ†‘Gas
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
524.9โ€“โ€“โ€“
per 1 mol of
524.9โ€“โ€“โ€“
per 1 mol of
74.99โ€“โ€“โ€“
524.9โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
524.9โ€“โ€“โ€“
per 1 mol of
524.9โ€“โ€“โ€“
per 1 mol of
105.0โ€“โ€“โ€“

Changes in aqueous solution (4)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 7H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHSO4Ionized aqueous solution + NH2OHAqueous solution + CO2โ†‘Un-ionized aqueous solution + 5H2โ†‘Un-ionized aqueous solution
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
503.9โ€“โ€“โ€“
per 1 mol of
503.9โ€“โ€“โ€“
per 1 mol of
71.99โ€“โ€“โ€“
503.9โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
503.9โ€“โ€“โ€“
per 1 mol of
503.9โ€“โ€“โ€“
per 1 mol of
100.8โ€“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
NaSCN (cr)-170.50[1]โ€“โ€“โ€“
NaSCN (ai)-163.68[1]-169.18[1]203.3[1]6.3[1]
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]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid, (g):Gas

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
NaHSO4 (cr)-1125.5[1]-992.8[1]113.0[1]โ€“
NaHSO4 (ai)-1127.46[1]-1017.80[1]190.8[1]-38[1]
NaHSO4 (cr)
1 hydrate
-1421.7[1]-1231.6[1]155[1]โ€“
NH2OH (cr)-114.2[1]โ€“โ€“โ€“
NH2OH (aq)-98.3[1]โ€“โ€“โ€“
CO2 (g)-393.509[1]-394.359[1]213.74[1]37.11[1]
CO2 (ao)-413.80[1]-385.98[1]117.6[1]โ€“
H2 (g)0[1]0[1]130.684[1]28.824[1]
H2 (ao)-4.2[1]17.6[1]577[1]โ€“
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):Aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution

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)