NaClO + 3H2O 💧⚡→ NaClO4 + 3H2↑
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- Electrolysis of aqueous sodium hypochlorite with water as oxidizing agent
Electrolysis of aqueous sodium hypochlorite yields sodium perchlorate and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous sodium hypochlorite with water as oxidizing agent
General equation
- Electrolysis of aqueous solution with water as oxidizing agent
- Miscible with water/Very soluble in water/Soluble in waterReducing agent + H2OOxidizing agent💧⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous sodium hypochlorite with water as oxidizing agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaClO | Sodium hypochlorite | 1 | Reducing | Very soluble in water |
| H2O | Water | 3 | Oxidizing | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaClO4 | Sodium perchlorate | 1 | Oxidized | – |
| 3 | Reduced | – |
Thermodynamic changes
Changes in standard condition (1)
- Electrolysis of aqueous sodium hypochlorite with water as oxidizing agent◆
ΔrG 739.7 kJ/mol K 0.26 × 10−129 pK 129.59
| 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 | 835.3 | 739.7 | 323 | – |
per 1 mol of | 835.3 | 739.7 | 323 | – |
per 1 mol of | 278.4 | 246.6 | 108 | – |
per 1 mol of | 835.3 | 739.7 | 323 | – |
| 278.4 | 246.6 | 108 | – |
Changes in standard condition (2)
- Electrolysis of aqueous sodium hypochlorite with water as oxidizing agent◆
ΔrG 792.5 kJ/mol K 0.14 × 10−138 pK 138.84
| 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 | 822.7 | 792.5 | 1662 | – |
per 1 mol of | 822.7 | 792.5 | 1662 | – |
per 1 mol of | 274.2 | 264.2 | 554.0 | – |
per 1 mol of | 822.7 | 792.5 | 1662 | – |
| 274.2 | 264.2 | 554.0 | – |
Thermodynamic data of reactants
| Chemical formula | Standard 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 |
|---|---|---|---|---|
| NaClO (ai) | -347.3[1] | -298.7[1] | 100[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] |
* (ai):Ionized aqueous solution, (cr):Crystalline solid, (l):Liquid, (g):Gas
Thermodynamic data of products
| Chemical formula | Standard 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 |
|---|---|---|---|---|
| NaClO4 (cr) | -383.30[1] | -254.85[1] | 142.3[1] | – |
| NaClO4 (ai) | -369.45[1] | -270.41[1] | 241.0[1] | – |
| NaClO4 (cr) 1 hydrate | -677.77[1] | -494.29[1] | 190.8[1] | – |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (ao):Un-ionized aqueous solution
References
List of references
- 1Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- ^ ΔfH°, -347.3 kJ · mol−1
- ^ ΔfG°, -298.7 kJ · mol−1
- ^ S°, 100. J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1
- ^ ΔfH°, -383.30 kJ · mol−1
- ^ ΔfG°, -254.85 kJ · mol−1
- ^ S°, 142.3 J · K−1 · mol−1
- ^ ΔfH°, -369.45 kJ · mol−1
- ^ ΔfG°, -270.41 kJ · mol−1
- ^ S°, 241.0 J · K−1 · mol−1
- ^ ΔfH°, -677.77 kJ · mol−1
- ^ ΔfG°, -494.29 kJ · mol−1
- ^ S°, 190.8 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 130.684 J · K−1 · mol−1
- ^ Cp°, 28.824 J · K−1 · mol−1
- ^ ΔfH°, -4.2 kJ · mol−1
- ^ ΔfG°, 17.6 kJ · mol−1
- ^ S°, 577 J · K−1 · mol−1