2Cl2 + H3BO3 🔥→ HClO2 + BCl3 + H2O
Last updated:
- Reaction of and boric acid
The reaction of and boric acid yields chlorous acid, , and water (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of and boric acid
General equation
- Reaction of self redoxing species and acid
- Self-redoxing speciesSelf redox agent + AcidNon-redox agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of and boric acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| 2 | – | Self redoxing | ||
| H3BO3 | Boric acid | 1 | – | Acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| HClO2 | Chlorous acid | 1 | Oxidized | – |
| 1 | Reduced | – | ||
| H2O | Water | 1 | – | – |
Thermodynamic changes
Changes in aqueous solution
- Reaction of and boric acid◆
ΔrG 334.9 kJ/mol K 0.21 × 10−58 pK 58.67
| 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 | 377.6 | 334.9 | 144 | – |
| 188.8 | 167.4 | 72.0 | – | |
per 1 mol of | 377.6 | 334.9 | 144 | – |
per 1 mol of | 377.6 | 334.9 | 144 | – |
| 377.6 | 334.9 | 144 | – | |
per 1 mol of | 377.6 | 334.9 | 144 | – |
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 |
|---|---|---|---|---|
| (g) | 0[1] | 0[1] | 223.066[1] | 33.907[1] |
| (ao) | -23.4[1] | 6.94[1] | 121[1] | – |
| H3BO3 (cr) | -1094.33[1] | -968.92[1] | 88.83[1] | 81.38[1] |
| H3BO3 (g) | -994.1[1] | – | – | – |
| H3BO3 (ao) | -1072.32[1] | -968.75[1] | 162.3[1] | – |
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid
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 |
|---|---|---|---|---|
| HClO2 (ao) | -51.9[1] | 5.9[1] | 188.3[1] | – |
| (cr) | – | – | – | – |
| (l) | -427.2[1] | -387.4[1] | 206.3[1] | 106.7[1] |
| (g) | -403.76[1] | -388.72[1] | 290.10[1] | 62.72[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] |
* (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (l):Liquid, (g):Gas
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°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 223.066 J · K−1 · mol−1
- ^ Cp°, 33.907 J · K−1 · mol−1
- ^ ΔfH°, -23.4 kJ · mol−1
- ^ ΔfG°, 6.94 kJ · mol−1
- ^ S°, 121. J · K−1 · mol−1
- ^ ΔfH°, -1094.33 kJ · mol−1
- ^ ΔfG°, -968.92 kJ · mol−1
- ^ S°, 88.83 J · K−1 · mol−1
- ^ Cp°, 81.38 J · K−1 · mol−1
- ^ ΔfH°, -994.1 kJ · mol−1
- ^ ΔfH°, -1072.32 kJ · mol−1
- ^ ΔfG°, -968.75 kJ · mol−1
- ^ S°, 162.3 J · K−1 · mol−1
- ^ ΔfH°, -51.9 kJ · mol−1
- ^ ΔfG°, 5.9 kJ · mol−1
- ^ S°, 188.3 J · K−1 · mol−1
- ^ ΔfH°, -427.2 kJ · mol−1
- ^ ΔfG°, -387.4 kJ · mol−1
- ^ S°, 206.3 J · K−1 · mol−1
- ^ Cp°, 106.7 J · K−1 · mol−1
- ^ ΔfH°, -403.76 kJ · mol−1
- ^ ΔfG°, -388.72 kJ · mol−1
- ^ S°, 290.10 J · K−1 · mol−1
- ^ Cp°, 62.72 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