Rb2O + 2HBr → 2RbBr + H2O
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- Reaction of rubidium oxide and hydrogen bromide
The reaction of rubidium oxide and hydrogen bromide yields rubidium bromide and water. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of rubidium oxide and hydrogen bromide
General equation
- Reaction of basic oxide and acid
- Basic oxideBrønsted base + AcidBrønsted acid ⟶ SaltConjugate base + H2OConjugate acid
- Reaction of strongly basic oxide and strong acid
- Strongly basic oxideBrønsted base + Strong acidBrønsted acid ⟶ Salt of strong acid and strong baseConjugate base + H2OConjugate acid
Oxidation state of each atom
- Reaction of rubidium oxide and hydrogen bromide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Rb2O | Rubidium oxide | 1 | Brønsted base | Basic oxide Strongly basic oxide |
| HBr | Hydrogen bromide | 2 | Brønsted acid | Acid Strong acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| RbBr | Rubidium bromide | 2 | Conjugate base | Salt Salt of strong acid and strong base |
| H2O | Water | 1 | Conjugate acid | Water |
Thermodynamic changes
Changes in standard condition
- Reaction of rubidium oxide and hydrogen bromide
| 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 | −663 | – | – | – |
per 1 mol of | −663 | – | – | – |
per 1 mol of | −332 | – | – | – |
per 1 mol of | −332 | – | – | – |
per 1 mol of | −663 | – | – | – |
Changes in aqueous solution
- Reaction of rubidium oxide and hydrogen bromide
| 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 | −449 | – | – | – |
per 1 mol of | −449 | – | – | – |
per 1 mol of | −225 | – | – | – |
per 1 mol of | −225 | – | – | – |
per 1 mol of | −449 | – | – | – |
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 |
|---|---|---|---|---|
| Rb2O (cr) | -339[1] | – | – | – |
| Rb2O (g) | -50[1] | – | – | – |
| HBr (g) | -36.40[1] | -53.45[1] | 198.695[1] | 29.142[1] |
| HBr (ai) | -121.55[1] | -103.96[1] | 82.4[1] | -141.8[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 |
|---|---|---|---|---|
| RbBr (cr) | -394.59[1] | -381.79[1] | 109.96[1] | 52.84[1] |
| RbBr (g) | -182.8[1] | -215.1[1] | 261.02[1] | 37.20[1] |
| RbBr (ai) | -372.71[1] | -387.94[1] | 203.93[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, (l):Liquid
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°, -339. kJ · mol−1
- ^ ΔfH°, -50. kJ · mol−1
- ^ ΔfH°, -36.40 kJ · mol−1
- ^ ΔfG°, -53.45 kJ · mol−1
- ^ S°, 198.695 J · K−1 · mol−1
- ^ Cp°, 29.142 J · K−1 · mol−1
- ^ ΔfH°, -121.55 kJ · mol−1
- ^ ΔfG°, -103.96 kJ · mol−1
- ^ S°, 82.4 J · K−1 · mol−1
- ^ Cp°, -141.8 J · K−1 · mol−1
- ^ ΔfH°, -394.59 kJ · mol−1
- ^ ΔfG°, -381.79 kJ · mol−1
- ^ S°, 109.96 J · K−1 · mol−1
- ^ Cp°, 52.84 J · K−1 · mol−1
- ^ ΔfH°, -182.8 kJ · mol−1
- ^ ΔfG°, -215.1 kJ · mol−1
- ^ S°, 261.02 J · K−1 · mol−1
- ^ Cp°, 37.20 J · K−1 · mol−1
- ^ ΔfH°, -372.71 kJ · mol−1
- ^ ΔfG°, -387.94 kJ · mol−1
- ^ S°, 203.93 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