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NaSCN + 4H2O ๐Ÿ’งโšกโ†’ NaHCO3 + NH2OH + H2Sโ†‘ + H2โ†‘

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Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNSodium thiocyanate + 4H2OWater
๐Ÿ’งโšก
โŸถ
NaHCO3Sodium hydrogencarbonate + NH2OHHydroxylamine + H2Sโ†‘Hydrogen sulfide + H2โ†‘Hydrogen

Electrolysis of aqueous sodium thiocyanate yields sodium hydrogencarbonate, hydroxylamine, hydrogen sulfide, 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 + 4H2OWater
๐Ÿ’งโšก
โŸถ
NaHCO3Sodium hydrogencarbonate + NH2OHHydroxylamine + H2Sโ†‘Hydrogen sulfide + H2โ†‘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
H2OWater4
โ€“
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
NaHCO3Sodium hydrogencarbonate1
โ€“
โ€“
NH2OHHydroxylamine1
Oxidized
โ€“
H2SHydrogen sulfide1
โ€“
โ€“
H2Hydrogen1
โ€“
โ€“

Thermodynamic changes

Changes in standard condition

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNCrystalline solid + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Crystalline solid + NH2OHCrystalline solid + H2Sโ†‘Gas + H2โ†‘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
228.2โ€“โ€“โ€“
per 1 mol of
228.2โ€“โ€“โ€“
per 1 mol of
57.05โ€“โ€“โ€“
228.2โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
228.2โ€“โ€“โ€“
per 1 mol of
228.2โ€“โ€“โ€“
per 1 mol of
228.2โ€“โ€“โ€“

Changes in aqueous solution (1)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Gas + H2โ†‘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
256.0โ€“โ€“โ€“
per 1 mol of
256.0โ€“โ€“โ€“
per 1 mol of
64.00โ€“โ€“โ€“
256.0โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
256.0โ€“โ€“โ€“
per 1 mol of
256.0โ€“โ€“โ€“
per 1 mol of
256.0โ€“โ€“โ€“

Changes in aqueous solution (2)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Gas + H2โ†‘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
251.8โ€“โ€“โ€“
per 1 mol of
251.8โ€“โ€“โ€“
per 1 mol of
62.95โ€“โ€“โ€“
251.8โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
251.8โ€“โ€“โ€“
per 1 mol of
251.8โ€“โ€“โ€“
per 1 mol of
251.8โ€“โ€“โ€“

Changes in aqueous solution (3)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Un-ionized aqueous solution + H2โ†‘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
236.9โ€“โ€“โ€“
per 1 mol of
236.9โ€“โ€“โ€“
per 1 mol of
59.23โ€“โ€“โ€“
236.9โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
236.9โ€“โ€“โ€“
per 1 mol of
236.9โ€“โ€“โ€“
per 1 mol of
236.9โ€“โ€“โ€“

Changes in aqueous solution (4)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Un-ionized aqueous solution + H2โ†‘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
232.7โ€“โ€“โ€“
per 1 mol of
232.7โ€“โ€“โ€“
per 1 mol of
58.17โ€“โ€“โ€“
232.7โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
232.7โ€“โ€“โ€“
per 1 mol of
232.7โ€“โ€“โ€“
per 1 mol of
232.7โ€“โ€“โ€“

Changes in aqueous solution (5)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Un-ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Gas + H2โ†‘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
244.2โ€“โ€“โ€“
per 1 mol of
244.2โ€“โ€“โ€“
per 1 mol of
61.05โ€“โ€“โ€“
244.2โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
244.2โ€“โ€“โ€“
per 1 mol of
244.2โ€“โ€“โ€“
per 1 mol of
244.2โ€“โ€“โ€“

Changes in aqueous solution (6)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Un-ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Gas + H2โ†‘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
240.0โ€“โ€“โ€“
per 1 mol of
240.0โ€“โ€“โ€“
per 1 mol of
60.00โ€“โ€“โ€“
240.0โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
240.0โ€“โ€“โ€“
per 1 mol of
240.0โ€“โ€“โ€“
per 1 mol of
240.0โ€“โ€“โ€“

Changes in aqueous solution (7)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Un-ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Un-ionized aqueous solution + H2โ†‘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
225.1โ€“โ€“โ€“
per 1 mol of
225.1โ€“โ€“โ€“
per 1 mol of
56.27โ€“โ€“โ€“
225.1โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
225.1โ€“โ€“โ€“
per 1 mol of
225.1โ€“โ€“โ€“
per 1 mol of
225.1โ€“โ€“โ€“

Changes in aqueous solution (8)

Electrolysis of aqueous sodium thiocyanate with water as oxidizing agent
NaSCNIonized aqueous solution + 4H2OLiquid
๐Ÿ’งโšก
โŸถ
NaHCO3Un-ionized aqueous solution + NH2OHAqueous solution + H2Sโ†‘Un-ionized aqueous solution + H2โ†‘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
220.9โ€“โ€“โ€“
per 1 mol of
220.9โ€“โ€“โ€“
per 1 mol of
55.23โ€“โ€“โ€“
220.9โ€“โ€“โ€“
per 1 mol of
Hydroxylamine
220.9โ€“โ€“โ€“
per 1 mol of
220.9โ€“โ€“โ€“
per 1 mol of
220.9โ€“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
NaHCO3 (cr)-950.81[1]-851.0[1]101.7[1]87.61[1]
NaHCO3 (ai)-932.11[1]-848.66[1]150.2[1]โ€“
NaHCO3 (ao)-943.9[1]-849.7[1]113.8[1]โ€“
NH2OH (cr)-114.2[1]โ€“โ€“โ€“
NH2OH (aq)-98.3[1]โ€“โ€“โ€“
H2S (g)-20.63[1]-33.56[1]205.79[1]34.23[1]
H2S (ao)-39.7[1]-27.83[1]121[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, (ao):Un-ionized aqueous solution, (aq):Aqueous solution, (g):Gas

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)