2SrBr2 + O2 + 2H2O → 2Sr(OH)2 + 2Br2
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- Reaction of strontium bromide and under neutral condition
The reaction of strontium bromide, , and water yields strontium hydroxide and . This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of strontium bromide and under neutral condition
General equation
- Reaction of hardly oxidizable species and oxidizing species under neutral condition
- Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H2ONon-redox agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of strontium bromide and under neutral condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SrBr2 | Strontium bromide | 2 | Reducing | Hardly oxidizable |
| 1 | Oxidizing | Oxidizing | ||
| H2O | Water | 2 | – | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Sr(OH)2 | Strontium hydroxide | 2 | Reduced | – |
| 2 | Oxidized | – |
Thermodynamic changes
Changes in standard condition
- Reaction of strontium bromide and under neutral condition
| 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 | 88.9 | – | – | – |
per 1 mol of | 44.5 | – | – | – |
| 88.9 | – | – | – | |
per 1 mol of | 44.5 | – | – | – |
per 1 mol of | 44.5 | – | – | – |
| 44.5 | – | – | – |
Changes in aqueous solution
- Reaction of strontium bromide and under neutral condition
| 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 | 238.0 | – | – | – |
per 1 mol of | 119.0 | – | – | – |
| 238.0 | – | – | – | |
per 1 mol of | 119.0 | – | – | – |
per 1 mol of | 119.0 | – | – | – |
| 119.0 | – | – | – |
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 |
|---|---|---|---|---|
| SrBr2 (cr) | -717.6[1] | -697.1[1] | 135.10[1] | 75.35[1] |
| SrBr2 (g) | -410[1] | -444[1] | 323.5[1] | 60.7[1] |
| SrBr2 (ai) | -788.89[1] | -767.39[1] | 132.2[1] | – |
| SrBr2 (cr) 1 hydrate | -1031.4[1] | -954.3[1] | 180[1] | 120.9[1] |
| SrBr2 (cr) 6 hydrate | -2531.3[1] | -2174.1[1] | 406[1] | 343.5[1] |
| (g) | 0[1] | 0[1] | 205.138[1] | 29.355[1] |
| (ao) | -11.7[1] | 16.4[1] | 110.9[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, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid
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 |
|---|---|---|---|---|
| Sr(OH)2 (cr) | -959.0[1] | – | – | – |
| Sr(OH)2 (g) | -565[1] | – | – | – |
| Sr(OH)2 (cr) 1 hydrate | -1264.8[1] | – | – | – |
| Sr(OH)2 (cr) 8 hydrate | -3352.2[1] | – | – | – |
| (cr) | – | – | – | – |
| (l) | 0[1] | 0[1] | 152.231[1] | 75.689[1] |
| (g) | 30.907[1] | 3.110[1] | 245.463[1] | 36.02[1] |
| (ao) | -2.59[1] | 3.93[1] | 130.5[1] | – |
* (cr):Crystalline solid, (g):Gas, (l):Liquid, (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°, -717.6 kJ · mol−1
- ^ ΔfG°, -697.1 kJ · mol−1
- ^ S°, 135.10 J · K−1 · mol−1
- ^ Cp°, 75.35 J · K−1 · mol−1
- ^ ΔfH°, -410. kJ · mol−1
- ^ ΔfG°, -444. kJ · mol−1
- ^ S°, 323.5 J · K−1 · mol−1
- ^ Cp°, 60.7 J · K−1 · mol−1
- ^ ΔfH°, -788.89 kJ · mol−1
- ^ ΔfG°, -767.39 kJ · mol−1
- ^ S°, 132.2 J · K−1 · mol−1
- ^ ΔfH°, -1031.4 kJ · mol−1
- ^ ΔfG°, -954.3 kJ · mol−1
- ^ S°, 180. J · K−1 · mol−1
- ^ Cp°, 120.9 J · K−1 · mol−1
- ^ ΔfH°, -2531.3 kJ · mol−1
- ^ ΔfG°, -2174.1 kJ · mol−1
- ^ S°, 406. J · K−1 · mol−1
- ^ Cp°, 343.5 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 205.138 J · K−1 · mol−1
- ^ Cp°, 29.355 J · K−1 · mol−1
- ^ ΔfH°, -11.7 kJ · mol−1
- ^ ΔfG°, 16.4 kJ · mol−1
- ^ S°, 110.9 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°, -959.0 kJ · mol−1
- ^ ΔfH°, -565. kJ · mol−1
- ^ ΔfH°, -1264.8 kJ · mol−1
- ^ ΔfH°, -3352.2 kJ · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 152.231 J · K−1 · mol−1
- ^ Cp°, 75.689 J · K−1 · mol−1
- ^ ΔfH°, 30.907 kJ · mol−1
- ^ ΔfG°, 3.110 kJ · mol−1
- ^ S°, 245.463 J · K−1 · mol−1
- ^ Cp°, 36.02 J · K−1 · mol−1
- ^ ΔfH°, -2.59 kJ · mol−1
- ^ ΔfG°, 3.93 kJ · mol−1
- ^ S°, 130.5 J · K−1 · mol−1