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2CuSO4 ๐Ÿ’งโšกโ†’ Cu2O + 2SO2โ†‘ + O3โ†‘

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Electrolysis of aqueous copper(II) sulfate without water as reactant
2CuSO4Copper(II) sulfate
๐Ÿ’งโšก
โŸถ
Cu2OCopper(I) oxide + 2SO2โ†‘Sulfur dioxide + O3โ†‘Ozone

Electrolysis of aqueous copper(II) sulfate yields copper(I) oxide, sulfur dioxide, and ozone (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 copper(II) sulfate without water as reactant
2CuSO4Copper(II) sulfate
๐Ÿ’งโšก
โŸถ
Cu2OCopper(I) oxide + 2SO2โ†‘Sulfur dioxide + O3โ†‘Ozone

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 copper(II) sulfate without water as reactant

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CuSO4Copper(II) sulfate2
Self redox agent
Soluble in water

Products

Chemical formulaNameCoefficientTypeType in general
equation
Cu2OCopper(I) oxide1
Reduced
โ€“
SO2Sulfur dioxide2
Reduced
โ€“
O3Ozone1
Oxidized
โ€“

Thermodynamic changes

Changes in standard condition

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG740.4 kJ/mol
K0.19 ร— 10โˆ’129
pK129.71
2CuSO4Crystalline solid
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Gas + O3โ†‘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
923.2740.4611โˆ’17.4
per 1 mol of
461.6370.2306โˆ’8.70
per 1 mol of
923.2740.4611โˆ’17.4
per 1 mol of
461.6370.2306โˆ’8.70
per 1 mol of
923.2740.4611โˆ’17.4

Changes in aqueous solution (1)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG801.2 kJ/mol
K0.43 ร— 10โˆ’140
pK140.36
2CuSO4Un-ionized aqueous solution
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Gas + O3โ†‘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
โ€“801.2โ€“โ€“
per 1 mol of
โ€“400.6โ€“โ€“
per 1 mol of
โ€“801.2โ€“โ€“
per 1 mol of
โ€“400.6โ€“โ€“
per 1 mol of
โ€“801.2โ€“โ€“

Changes in aqueous solution (2)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG812.1 kJ/mol
K0.53 ร— 10โˆ’142
pK142.27
2CuSO4Un-ionized aqueous solution
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Gas + O3โ†‘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
โ€“812.1โ€“โ€“
per 1 mol of
โ€“406.1โ€“โ€“
per 1 mol of
โ€“812.1โ€“โ€“
per 1 mol of
โ€“406.1โ€“โ€“
per 1 mol of
โ€“812.1โ€“โ€“

Changes in aqueous solution (3)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG800.2 kJ/mol
K0.65 ร— 10โˆ’140
pK140.19
2CuSO4Un-ionized aqueous solution
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Un-ionized aqueous solution + O3โ†‘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
โ€“800.2โ€“โ€“
per 1 mol of
โ€“400.1โ€“โ€“
per 1 mol of
โ€“800.2โ€“โ€“
per 1 mol of
โ€“400.1โ€“โ€“
per 1 mol of
โ€“800.2โ€“โ€“

Changes in aqueous solution (4)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG811.1 kJ/mol
K0.80 ร— 10โˆ’142
pK142.10
2CuSO4Un-ionized aqueous solution
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Un-ionized aqueous solution + O3โ†‘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
โ€“811.1โ€“โ€“
per 1 mol of
โ€“405.6โ€“โ€“
per 1 mol of
โ€“811.1โ€“โ€“
per 1 mol of
โ€“405.6โ€“โ€“
per 1 mol of
โ€“811.1โ€“โ€“

Changes in aqueous solution (5)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG740.4 kJ/mol
K0.19 ร— 10โˆ’129
pK129.71
2CuSO4Crystalline solid
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Gas + O3โ†‘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
923.2740.4611โˆ’17.4
per 1 mol of
461.6370.2306โˆ’8.70
per 1 mol of
923.2740.4611โˆ’17.4
per 1 mol of
461.6370.2306โˆ’8.70
per 1 mol of
923.2740.4611โˆ’17.4

Changes in aqueous solution (6)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG751.3 kJ/mol
K0.24 ร— 10โˆ’131
pK131.62
2CuSO4Crystalline solid
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Gas + O3โ†‘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
906.4751.3518โ€“
per 1 mol of
453.2375.6259โ€“
per 1 mol of
906.4751.3518โ€“
per 1 mol of
453.2375.6259โ€“
per 1 mol of
906.4751.3518โ€“

Changes in aqueous solution (7)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG739.4 kJ/mol
K0.29 ร— 10โˆ’129
pK129.54
2CuSO4Crystalline solid
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Un-ionized aqueous solution + O3โ†‘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
870.9739.4438โ€“
per 1 mol of
435.4369.7219โ€“
per 1 mol of
870.9739.4438โ€“
per 1 mol of
435.4369.7219โ€“
per 1 mol of
870.9739.4438โ€“

Changes in aqueous solution (8)

Electrolysis of aqueous copper(II) sulfate without water as reactant
โ—†
ฮ”rG750.3 kJ/mol
K0.36 ร— 10โˆ’131
pK131.45
2CuSO4Crystalline solid
๐Ÿ’งโšก
โŸถ
Cu2OCrystalline solid + 2SO2โ†‘Un-ionized aqueous solution + O3โ†‘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
854.1750.3345โ€“
per 1 mol of
427.1375.1173โ€“
per 1 mol of
854.1750.3345โ€“
per 1 mol of
427.1375.1173โ€“
per 1 mol of
854.1750.3345โ€“

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
CuSO4 (cr)-771.36[1]-661.8[1]109[1]100.0[1]
CuSO4 (ai)-844.50[1]-679.04[1]-79.5[1]โ€“
CuSO4 (ao)โ€“-692.18[1]โ€“โ€“
CuSO4 (cr)
1 hydrate
-1085.83[1]-918.11[1]146.0[1]134[1]
CuSO4 (cr)
3 hydrate
-1684.31[1]-1399.96[1]221.3[1]205[1]
CuSO4 (cr)
5 hydrate
-2279.65[1]-1879.745[1]300.4[1]280[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-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
Cu2O (cr)-168.6[1]-146.0[1]93.14[1]63.64[1]
SO2 (l)-320.5[1]โ€“โ€“โ€“
SO2 (g)-296.830[1]-300.194[1]248.22[1]39.87[1]
SO2 (ao)-322.980[1]-300.676[1]161.9[1]โ€“
O3 (g)142.7[1]163.2[1]238.93[1]39.20[1]
O3 (ao)125.9[1]174.1[1]146[1]โ€“
* (cr):Crystalline solid, (l):Liquid, (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)