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CdSO4 + H2O 💧⚡→ Cd + H2SO3 + O2

Electrolysis of aqueous cadmium sulfate with water as non-redox agent

Electrolysis of aqueous cadmium sulfate yields cadmium, sulfurous acid, and oxygen (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 cadmium sulfate with water as non-redox agent

General equation

Electrolysis of aqueous solution with water as non redox agent
Miscible with water/Very soluble in water/Soluble in waterSelf redox agent + H2ONon-redox agent
💧⚡
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Electrolysis of aqueous cadmium sulfate with water as non-redox agent

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CdSO4Cadmium sulfate1
Self redox agent
Very soluble in water
H2OWater1
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
CdCadmium1
Reduced
H2SO3Sulfurous acid1
Reduced
O2Oxygen1
Oxidized

Thermodynamic changes

Changes in standard condition (1)

Electrolysis of aqueous cadmium sulfate with water as non-redox agent
ΔrG522.04 kJ/mol
K0.35 × 10−91
pK91.46
CdSO4Crystalline solid + H2OLiquid
💧⚡
CdCrystalline solidγ + H2SO3Un-ionized aqueous solution + O2Gas
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
610.30522.04296.1
per 1 mol of
610.30522.04296.1
per 1 mol of
610.30522.04296.1
per 1 mol of
610.30522.04296.1
per 1 mol of
610.30522.04296.1
per 1 mol of
610.30522.04296.1

Changes in standard condition (2)

Electrolysis of aqueous cadmium sulfate with water as non-redox agent
ΔrG538.4 kJ/mol
K0.47 × 10−94
pK94.32
CdSO4Crystalline solid + H2OLiquid
💧⚡
CdCrystalline solidγ + H2SO3Un-ionized aqueous solution + O2Un-ionized aqueous solution
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
598.6538.4201.9
per 1 mol of
598.6538.4201.9
per 1 mol of
598.6538.4201.9
per 1 mol of
598.6538.4201.9
per 1 mol of
598.6538.4201.9
per 1 mol of
598.6538.4201.9

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
CdSO4 (cr)-933.28[1]-822.72[1]123.039[1]99.58[1]
CdSO4 (ai)-985.16[1]-822.13[1]-53.1[1]
CdSO4 (cr)
1 hydrate
-1239.55[1]-1068.73[1]154.030[1]134.56[1]
CdSO4 (cr)
8/3 hydrate
-1729.4[1]-1465.141[1]229.630[1]213.26[1]
H2O (cr)
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
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
Cd (cr)
γ
0[1]0[1]51.76[1]25.98[1]
Cd (cr)
α
-0.59[1]-0.59[1]51.76[1]
Cd (g)112.01[1]77.41[1]167.746[1]20.786[1]
H2SO3 (ao)-608.81[1]-537.81[1]232.2[1]
O2 (g)0[1]0[1]205.138[1]29.355[1]
O2 (ao)-11.7[1]16.4[1]110.9[1]
* (cr):Crystalline solid, (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)