BeBr2 + 2CsOH → 2CsBr + Be(OH)2
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The reaction of beryllium bromide and caesium hydroxide yields caesium bromide and beryllium hydroxide. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of beryllium bromide and caesium hydroxide
General equation
- Reaction of salt of weak base and strong base
- Salt of weak baseBrønsted acid + Strong baseBrønsted base ⟶ Salt of strong baseConjugate acid + Weak baseConjugate base + (H2O)
Oxidation state of each atom
- Reaction of beryllium bromide and caesium hydroxide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| BeBr2 | Beryllium bromide | 1 | Brønsted acid | Salt of weak base |
| CsOH | Caesium hydroxide | 2 | Brønsted base | Strong base |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CsBr | Caesium bromide | 2 | Conjugate acid | Salt of strong base |
| Be(OH)2 | Beryllium hydroxide | 1 | Conjugate base | Weak base |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of beryllium bromide and caesium hydroxide
| 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 | −526.2 | – | – | – |
per 1 mol of | −526.2 | – | – | – |
per 1 mol of | −263.1 | – | – | – |
per 1 mol of | −263.1 | – | – | – |
per 1 mol of | −526.2 | – | – | – |
Changes in standard condition (2)
- Reaction of beryllium bromide and caesium hydroxide
| 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 | −529.5 | – | – | – |
per 1 mol of | −529.5 | – | – | – |
per 1 mol of | −264.8 | – | – | – |
per 1 mol of | −264.8 | – | – | – |
per 1 mol of | −529.5 | – | – | – |
Changes in standard condition (3)
- Reaction of beryllium bromide and caesium hydroxide
| 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 | −521.6 | – | – | – |
per 1 mol of | −521.6 | – | – | – |
per 1 mol of | −260.8 | – | – | – |
per 1 mol of | −260.8 | – | – | – |
per 1 mol of | −521.6 | – | – | – |
Changes in aqueous solution
- Reaction of beryllium bromide and caesium hydroxide
| 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 | −332.1 | – | – | – |
per 1 mol of | −332.1 | – | – | – |
per 1 mol of | −166.1 | – | – | – |
per 1 mol of | −166.1 | – | – | – |
per 1 mol of | −332.1 | – | – | – |
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 |
|---|---|---|---|---|
| BeBr2 (cr) | -353.5[1] | – | – | – |
| CsOH (cr) | -417.23[1] | – | – | – |
| CsOH (g) | -247[1] | -247[1] | 254.83[1] | 49.71[1] |
| CsOH (ai) | -488.27[1] | -449.25[1] | 122.30[1] | – |
| CsOH (cr) 1 hydrate | -754.04[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 |
|---|---|---|---|---|
| CsBr (cr) | -405.81[1] | -391.41[1] | 113.05[1] | 52.93[1] |
| CsBr (g) | -209.2[1] | -241.0[1] | 267.43[1] | 37.07[1] |
| CsBr (ai) | -379.82[1] | -395.97[1] | 215.48[1] | – |
| Be(OH)2 (cr) α | -902.5[1] | -815.0[1] | 51.9[1] | – |
| Be(OH)2 (cr) β | -905.8[1] | -817.5[1] | 50[1] | – |
| Be(OH)2 (am) freshly precipitated | -897.9[1] | – | – | – |
| Be(OH)2 (g) | -661[1] | – | – | – |
| Be(OH)2 (am) 0.75 hydrate | -1116.7[1] | – | – | – |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (am):Amorphous solid
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°, -353.5 kJ · mol−1
- ^ ΔfH°, -417.23 kJ · mol−1
- ^ ΔfH°, -247. kJ · mol−1
- ^ ΔfG°, -247. kJ · mol−1
- ^ S°, 254.83 J · K−1 · mol−1
- ^ Cp°, 49.71 J · K−1 · mol−1
- ^ ΔfH°, -488.27 kJ · mol−1
- ^ ΔfG°, -449.25 kJ · mol−1
- ^ S°, 122.30 J · K−1 · mol−1
- ^ ΔfH°, -754.04 kJ · mol−1
- ^ ΔfH°, -405.81 kJ · mol−1
- ^ ΔfG°, -391.41 kJ · mol−1
- ^ S°, 113.05 J · K−1 · mol−1
- ^ Cp°, 52.93 J · K−1 · mol−1
- ^ ΔfH°, -209.2 kJ · mol−1
- ^ ΔfG°, -241.0 kJ · mol−1
- ^ S°, 267.43 J · K−1 · mol−1
- ^ Cp°, 37.07 J · K−1 · mol−1
- ^ ΔfH°, -379.82 kJ · mol−1
- ^ ΔfG°, -395.97 kJ · mol−1
- ^ S°, 215.48 J · K−1 · mol−1
- ^ ΔfH°, -902.5 kJ · mol−1
- ^ ΔfG°, -815.0 kJ · mol−1
- ^ S°, 51.9 J · K−1 · mol−1
- ^ ΔfH°, -905.8 kJ · mol−1
- ^ ΔfG°, -817.5 kJ · mol−1
- ^ S°, 50. J · K−1 · mol−1
- ^ ΔfH°, -897.9 kJ · mol−1
- ^ ΔfH°, -661. kJ · mol−1
- ^ ΔfH°, -1116.7 kJ · mol−1