NaCl + KBrO3 🔥→ NaBr + KClO3
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The reaction of sodium chloride and potassium bromate yields sodium bromide and potassium chlorate (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 sodium chloride and potassium bromate
General equation
- Reaction of hardly oxidizable species and oxidizing species
- Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of sodium chloride and potassium bromate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaCl | Sodium chloride | 1 | Reducing | Hardly oxidizable |
| KBrO3 | Potassium bromate | 1 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaBr | Sodium bromide | 1 | Reduced | – |
| KClO3 | Potassium chlorate | 1 | Oxidized | – |
Thermodynamic changes
Changes in standard condition
- Reaction of sodium chloride and potassium bromate◆
ΔrG 10.07 kJ/mol K 0.17 × 10−1 pK 1.76
| 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 | 12.60 | 10.07 | 8.6 | −4.06 |
per 1 mol of | 12.60 | 10.07 | 8.6 | −4.06 |
per 1 mol of | 12.60 | 10.07 | 8.6 | −4.06 |
per 1 mol of | 12.60 | 10.07 | 8.6 | −4.06 |
per 1 mol of | 12.60 | 10.07 | 8.6 | −4.06 |
Changes in aqueous solution
- Reaction of sodium chloride and potassium bromate◆
ΔrG 0.73 kJ/mol K 0.74 × 100 pK 0.13
| 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 | 8.70 | 0.73 | 26.5 | – |
per 1 mol of | 8.70 | 0.730 | 26.5 | – |
per 1 mol of | 8.70 | 0.730 | 26.5 | – |
per 1 mol of | 8.70 | 0.730 | 26.5 | – |
per 1 mol of | 8.70 | 0.730 | 26.5 | – |
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 |
|---|---|---|---|---|
| NaCl (cr) | -411.153[1] | -384.138[1] | 72.13[1] | 50.50[1] |
| NaCl (g) | -176.65[1] | -196.66[1] | 229.81[1] | 35.77[1] |
| NaCl (ai) | -407.27[1] | -393.133[1] | 115.5[1] | -90.0[1] |
| KBrO3 (cr) | -360.24[1] | -271.16[1] | 149.16[1] | 105.19[1] |
| KBrO3 (ai) | -319.45[1] | -264.67[1] | 264.22[1] | – |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution
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 |
|---|---|---|---|---|
| NaBr (cr) | -361.062[1] | -348.983[1] | 86.82[1] | 51.38[1] |
| NaBr (g) | -143.1[1] | -177.06[1] | 241.19[1] | 36.32[1] |
| NaBr (ai) | -361.665[1] | -365.849[1] | 141.4[1] | -95.4[1] |
| NaBr (cr) 2 hydrate | -951.94[1] | -828.29[1] | 179.1[1] | – |
| KClO3 (cr) | -397.73[1] | -296.25[1] | 143.1[1] | 100.25[1] |
| KClO3 (ai) | -356.35[1] | -291.22[1] | 264.8[1] | – |
* (cr):Crystalline solid, (g):Gas, (ai):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°, -411.153 kJ · mol−1
- ^ ΔfG°, -384.138 kJ · mol−1
- ^ S°, 72.13 J · K−1 · mol−1
- ^ Cp°, 50.50 J · K−1 · mol−1
- ^ ΔfH°, -176.65 kJ · mol−1
- ^ ΔfG°, -196.66 kJ · mol−1
- ^ S°, 229.81 J · K−1 · mol−1
- ^ Cp°, 35.77 J · K−1 · mol−1
- ^ ΔfH°, -407.27 kJ · mol−1
- ^ ΔfG°, -393.133 kJ · mol−1
- ^ S°, 115.5 J · K−1 · mol−1
- ^ Cp°, -90.0 J · K−1 · mol−1
- ^ ΔfH°, -360.24 kJ · mol−1
- ^ ΔfG°, -271.16 kJ · mol−1
- ^ S°, 149.16 J · K−1 · mol−1
- ^ Cp°, 105.19 J · K−1 · mol−1
- ^ ΔfH°, -319.45 kJ · mol−1
- ^ ΔfG°, -264.67 kJ · mol−1
- ^ S°, 264.22 J · K−1 · mol−1
- ^ ΔfH°, -361.062 kJ · mol−1
- ^ ΔfG°, -348.983 kJ · mol−1
- ^ S°, 86.82 J · K−1 · mol−1
- ^ Cp°, 51.38 J · K−1 · mol−1
- ^ ΔfH°, -143.1 kJ · mol−1
- ^ ΔfG°, -177.06 kJ · mol−1
- ^ S°, 241.19 J · K−1 · mol−1
- ^ Cp°, 36.32 J · K−1 · mol−1
- ^ ΔfH°, -361.665 kJ · mol−1
- ^ ΔfG°, -365.849 kJ · mol−1
- ^ S°, 141.4 J · K−1 · mol−1
- ^ Cp°, -95.4 J · K−1 · mol−1
- ^ ΔfH°, -951.94 kJ · mol−1
- ^ ΔfG°, -828.29 kJ · mol−1
- ^ S°, 179.1 J · K−1 · mol−1
- ^ ΔfH°, -397.73 kJ · mol−1
- ^ ΔfG°, -296.25 kJ · mol−1
- ^ S°, 143.1 J · K−1 · mol−1
- ^ Cp°, 100.25 J · K−1 · mol−1
- ^ ΔfH°, -356.35 kJ · mol−1
- ^ ΔfG°, -291.22 kJ · mol−1
- ^ S°, 264.8 J · K−1 · mol−1