Rb2O + 2HF → 2RbF + H2O
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- Reaction of rubidium oxide and hydrogen fluoride
The reaction of rubidium oxide and hydrogen fluoride yields rubidium fluoride 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 fluoride
General equation
- Reaction of basic oxide and acid
- Basic oxideBrønsted base + AcidBrønsted acid ⟶ SaltConjugate base + H2OConjugate acid
- Reaction of strongly basic oxide and weak acid
- Strongly basic oxideBrønsted base + Weak acidBrønsted acid ⟶ Salt of weak acid and strong baseConjugate base + H2OConjugate acid
Oxidation state of each atom
- Reaction of rubidium oxide and hydrogen fluoride
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Rb2O | Rubidium oxide | 1 | Brønsted base | Basic oxide Strongly basic oxide |
| HF | Hydrogen fluoride | 2 | Brønsted acid | Acid Weak acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| RbF | Rubidium fluoride | 2 | Conjugate base | Salt Salt of weak acid and strong base |
| H2O | Water | 1 | Conjugate acid | Water |
Thermodynamic changes
Changes in standard condition
- Reaction of rubidium oxide and hydrogen fluoride
| 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 | −520 | – | – | – |
per 1 mol of | −520 | – | – | – |
per 1 mol of | −260 | – | – | – |
per 1 mol of | −260 | – | – | – |
per 1 mol of | −520 | – | – | – |
Changes in aqueous solution (1)
- Reaction of rubidium oxide and hydrogen fluoride
| 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 | −474 | – | – | – |
per 1 mol of | −474 | – | – | – |
per 1 mol of | −237 | – | – | – |
per 1 mol of | −237 | – | – | – |
per 1 mol of | −474 | – | – | – |
Changes in aqueous solution (2)
- Reaction of rubidium oxide and hydrogen fluoride
| 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 | – | – | – |
Changes in aqueous solution (3)
- Reaction of rubidium oxide and hydrogen fluoride
| 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 | −474 | – | – | – |
per 1 mol of | −474 | – | – | – |
per 1 mol of | −237 | – | – | – |
per 1 mol of | −237 | – | – | – |
per 1 mol of | −474 | – | – | – |
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] | – | – | – |
| HF (l) x denotes undetermined zero point entropy | -299.78[1] | – | 75.40+x[1] | – |
| HF (g) | -271.1[1] | -273.2[1] | 173.779[1] | 29.133[1] |
| HF (ai) | -332.63[1] | -278.79[1] | -13.8[1] | -106.7[1] |
| HF (ao) | -320.08[1] | -296.82[1] | 88.7[1] | – |
* (cr):Crystalline solid, (g):Gas, (l):Liquid, (ai):Ionized aqueous solution, (ao):Un-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 |
|---|---|---|---|---|
| RbF (cr) | -557.7[1] | – | – | – |
| RbF (g) | -331.4[1] | -349.0[1] | 237.09[1] | 35.69[1] |
| RbF (ai) | -583.79[1] | -562.77[1] | 107.5[1] | – |
| RbF (cr) 1.5 hydrate | -1013.8[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°, -299.78 kJ · mol−1
- ^ S°, 75.40+x J · K−1 · mol−1
- ^ ΔfH°, -271.1 kJ · mol−1
- ^ ΔfG°, -273.2 kJ · mol−1
- ^ S°, 173.779 J · K−1 · mol−1
- ^ Cp°, 29.133 J · K−1 · mol−1
- ^ ΔfH°, -332.63 kJ · mol−1
- ^ ΔfG°, -278.79 kJ · mol−1
- ^ S°, -13.8 J · K−1 · mol−1
- ^ Cp°, -106.7 J · K−1 · mol−1
- ^ ΔfH°, -320.08 kJ · mol−1
- ^ ΔfG°, -296.82 kJ · mol−1
- ^ S°, 88.7 J · K−1 · mol−1
- ^ ΔfH°, -557.7 kJ · mol−1
- ^ ΔfH°, -331.4 kJ · mol−1
- ^ ΔfG°, -349.0 kJ · mol−1
- ^ S°, 237.09 J · K−1 · mol−1
- ^ Cp°, 35.69 J · K−1 · mol−1
- ^ ΔfH°, -583.79 kJ · mol−1
- ^ ΔfG°, -562.77 kJ · mol−1
- ^ S°, 107.5 J · K−1 · mol−1
- ^ ΔfH°, -1013.8 kJ · 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