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Ca(CN)2 + 8H2O ๐Ÿ’งโšกโ†’ Ca(OH)2 + 3O2โ†‘ + 2NH3โ†‘ + 2CH4โ†‘

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Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Calcium cyanide + 8H2OWater
๐Ÿ’งโšก
โŸถ
Ca(OH)2Calcium hydroxide + 3O2โ†‘Oxygen + 2NH3โ†‘Ammonia + 2CH4โ†‘Methane

Electrolysis of aqueous calcium cyanide yields calcium hydroxide, oxygen, ammonia, and methane (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 calcium cyanide with water as reducing agent
Ca(CN)2Calcium cyanide + 8H2OWater
๐Ÿ’งโšก
โŸถ
Ca(OH)2Calcium hydroxide + 3O2โ†‘Oxygen + 2NH3โ†‘Ammonia + 2CH4โ†‘Methane

General equation

Electrolysis of aqueous solution with water as reducing agent
Miscible with water/Very soluble in water/Soluble in waterOxidizing agent + H2OReducing agent
๐Ÿ’งโšก
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Electrolysis of aqueous calcium cyanide with water as reducing agent

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Ca(CN)2Calcium cyanide1
Oxidizing
Soluble in water
H2OWater8
Reducing
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
Ca(OH)2Calcium hydroxide1
โ€“
โ€“
O2Oxygen3
Oxidized
โ€“
NH3Ammonia2
โ€“
โ€“
CH4Methane2
Reduced
โ€“

Thermodynamic changes

Changes in standard condition

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Crystalline solid + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Gas + 2NH3โ†‘Gas + 2CH4โ†‘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
1243.2โ€“โ€“โ€“
per 1 mol of
1243.2โ€“โ€“โ€“
per 1 mol of
155.40โ€“โ€“โ€“
per 1 mol of
1243.2โ€“โ€“โ€“
per 1 mol of
414.40โ€“โ€“โ€“
per 1 mol of
621.60โ€“โ€“โ€“
per 1 mol of
621.60โ€“โ€“โ€“

Changes in aqueous solution (1)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Gas + 2NH3โ†‘Gas + 2CH4โ†‘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
1296.8โ€“โ€“โ€“
per 1 mol of
1296.8โ€“โ€“โ€“
per 1 mol of
162.10โ€“โ€“โ€“
per 1 mol of
1296.8โ€“โ€“โ€“
per 1 mol of
432.27โ€“โ€“โ€“
per 1 mol of
648.40โ€“โ€“โ€“
per 1 mol of
648.40โ€“โ€“โ€“

Changes in aqueous solution (2)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Gas + 2NH3โ†‘Gas + 2CH4โ†‘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
1268.4โ€“โ€“โ€“
per 1 mol of
1268.4โ€“โ€“โ€“
per 1 mol of
158.55โ€“โ€“โ€“
per 1 mol of
1268.4โ€“โ€“โ€“
per 1 mol of
422.80โ€“โ€“โ€“
per 1 mol of
634.20โ€“โ€“โ€“
per 1 mol of
634.20โ€“โ€“โ€“

Changes in aqueous solution (3)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Gas + 2NH3โ†‘Un-ionized aqueous solution + 2CH4โ†‘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
1228.5โ€“โ€“โ€“
per 1 mol of
1228.5โ€“โ€“โ€“
per 1 mol of
153.56โ€“โ€“โ€“
per 1 mol of
1228.5โ€“โ€“โ€“
per 1 mol of
409.50โ€“โ€“โ€“
per 1 mol of
614.25โ€“โ€“โ€“
per 1 mol of
614.25โ€“โ€“โ€“

Changes in aqueous solution (4)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Gas + 2NH3โ†‘Un-ionized aqueous solution + 2CH4โ†‘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
1200.0โ€“โ€“โ€“
per 1 mol of
1200.0โ€“โ€“โ€“
per 1 mol of
150.00โ€“โ€“โ€“
per 1 mol of
1200.0โ€“โ€“โ€“
per 1 mol of
400.00โ€“โ€“โ€“
per 1 mol of
600.00โ€“โ€“โ€“
per 1 mol of
600.00โ€“โ€“โ€“

Changes in aqueous solution (5)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Un-ionized aqueous solution + 2NH3โ†‘Gas + 2CH4โ†‘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
1261.7โ€“โ€“โ€“
per 1 mol of
1261.7โ€“โ€“โ€“
per 1 mol of
157.71โ€“โ€“โ€“
per 1 mol of
1261.7โ€“โ€“โ€“
per 1 mol of
420.57โ€“โ€“โ€“
per 1 mol of
630.85โ€“โ€“โ€“
per 1 mol of
630.85โ€“โ€“โ€“

Changes in aqueous solution (6)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Un-ionized aqueous solution + 2NH3โ†‘Gas + 2CH4โ†‘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
1233.3โ€“โ€“โ€“
per 1 mol of
1233.3โ€“โ€“โ€“
per 1 mol of
154.16โ€“โ€“โ€“
per 1 mol of
1233.3โ€“โ€“โ€“
per 1 mol of
411.10โ€“โ€“โ€“
per 1 mol of
616.65โ€“โ€“โ€“
per 1 mol of
616.65โ€“โ€“โ€“

Changes in aqueous solution (7)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Un-ionized aqueous solution + 2NH3โ†‘Un-ionized aqueous solution + 2CH4โ†‘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
1193.4โ€“โ€“โ€“
per 1 mol of
1193.4โ€“โ€“โ€“
per 1 mol of
149.18โ€“โ€“โ€“
per 1 mol of
1193.4โ€“โ€“โ€“
per 1 mol of
397.80โ€“โ€“โ€“
per 1 mol of
596.70โ€“โ€“โ€“
per 1 mol of
596.70โ€“โ€“โ€“

Changes in aqueous solution (8)

Electrolysis of aqueous calcium cyanide with water as reducing agent
Ca(CN)2Aqueous solution + 8H2OLiquid
๐Ÿ’งโšก
โŸถ
Ca(OH)2Crystalline solid + 3O2โ†‘Un-ionized aqueous solution + 2NH3โ†‘Un-ionized aqueous solution + 2CH4โ†‘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
1164.9โ€“โ€“โ€“
per 1 mol of
1164.9โ€“โ€“โ€“
per 1 mol of
145.61โ€“โ€“โ€“
per 1 mol of
1164.9โ€“โ€“โ€“
per 1 mol of
388.30โ€“โ€“โ€“
per 1 mol of
582.45โ€“โ€“โ€“
per 1 mol of
582.45โ€“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
Ca(CN)2 (cr)-184.5[1]โ€“โ€“โ€“
Ca(CN)2 (aq)-238.1[1]โ€“โ€“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]
* (cr):Crystalline solid, (aq):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
Ca(OH)2 (cr)-986.09[1]-898.49[1]83.39[1]87.49[1]
Ca(OH)2 (g)-544[1]โ€“โ€“โ€“
Ca(OH)2 (ai)-1002.82[1]-868.07[1]-74.5[1]โ€“
Ca(OH)2 (cr)
2 hydrate
-1218.4[1]โ€“โ€“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€“
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€“
CH4 (g)-74.81[1]-50.72[1]186.264[1]35.309[1]
CH4 (ao)-89.04[1]-34.33[1]83.7[1]โ€“
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (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)