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3(NH4)2Cr2O7 + 6H2O 💧⚡→ 6NH2OH + 6Cr(OH)3 + O3

Electrolysis of aqueous ammonium dichromate with water as non-redox agent

Electrolysis of aqueous ammonium dichromate yields hydroxylamine, chromium(III) hydroxide, 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 ammonium dichromate 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 ammonium dichromate with water as non-redox agent

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
(NH4)2Cr2O7Ammonium dichromate3
Self redox agent
Very soluble in water
H2OWater6
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
NH2OHHydroxylamine6
Oxidized
Cr(OH)3Chromium(III) hydroxide6
Reduced
O3Ozone1

Thermodynamic changes

Changes in standard condition

Electrolysis of aqueous ammonium dichromate with water as non-redox agent
3(NH4)2Cr2O7Crystalline solid + 6H2OLiquid
💧⚡
6NH2OHCrystalline solid + 6Cr(OH)3Crystalline solidprecipitated + O3Gas
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
208.6
69.53
per 1 mol of
34.77
per 1 mol of
Hydroxylamine
34.77
34.77
per 1 mol of
208.6

Changes in aqueous solution (1)

Electrolysis of aqueous ammonium dichromate with water as non-redox agent
3(NH4)2Cr2O7Ionized aqueous solution + 6H2OLiquid
💧⚡
6NH2OHAqueous solution + 6Cr(OH)3Crystalline solidprecipitated + O3Gas
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
149.5
49.83
per 1 mol of
24.92
per 1 mol of
Hydroxylamine
24.92
24.92
per 1 mol of
149.5

Changes in aqueous solution (2)

Electrolysis of aqueous ammonium dichromate with water as non-redox agent
3(NH4)2Cr2O7Ionized aqueous solution + 6H2OLiquid
💧⚡
6NH2OHAqueous solution + 6Cr(OH)3Crystalline solidprecipitated + O3Un-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
132.7
44.23
per 1 mol of
22.12
per 1 mol of
Hydroxylamine
22.12
22.12
per 1 mol of
132.7

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
(NH4)2Cr2O7 (cr)-1806.7[1]
(NH4)2Cr2O7 (ai)-1755.2[1]-1459.5[1]488.7[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
NH2OH (cr)-114.2[1]
NH2OH (aq)-98.3[1]
Cr(OH)3 (cr)
precipitated
-1064.0[1]
O3 (g)142.7[1]163.2[1]238.93[1]39.20[1]
O3 (ao)125.9[1]174.1[1]146[1]
* (cr):Crystalline solid, (aq):Aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

  1. 1