CsHCO3 🔥→ CsOH + CO2↑
Last updated:
Decomposition of caesium hydrogencarbonate yields caesium hydroxide and carbon dioxide (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Decomposition of caesium hydrogencarbonate
General equation
- Thermal decomposition without redox
- Thermally decomposable substanceLewis conjugate🔥⟶ ProductLewis acid + ProductLewis base
Oxidation state of each atom
- Decomposition of caesium hydrogencarbonate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CsHCO3 | Caesium hydrogencarbonate | 1 | Lewis conjugate | Thermally decomposable |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CsOH | Caesium hydroxide | 1 | Lewis acid | – |
| CO2 | Carbon dioxide | 1 | Lewis acid | – |
Thermodynamic changes
Changes in standard condition
- Decomposition of caesium hydrogencarbonate
| 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 | 155.4 | – | – | – |
per 1 mol of | 155.4 | – | – | – |
per 1 mol of | 155.4 | – | – | – |
per 1 mol of | 155.4 | – | – | – |
Changes in aqueous solution (1)
- Decomposition of caesium hydrogencarbonate◆
ΔrG 35.17 kJ/mol K 0.69 × 10−6 pK 6.16
| 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 | 68.49 | 35.17 | 111.7 | – |
per 1 mol of | 68.49 | 35.17 | 111.7 | – |
per 1 mol of | 68.49 | 35.17 | 111.7 | – |
per 1 mol of | 68.49 | 35.17 | 111.7 | – |
Changes in aqueous solution (2)
- Decomposition of caesium hydrogencarbonate◆
ΔrG 43.55 kJ/mol K 0.23 × 10−7 pK 7.63
| 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 | 48.20 | 43.55 | 15.6 | – |
per 1 mol of | 48.20 | 43.55 | 15.6 | – |
per 1 mol of | 48.20 | 43.55 | 15.6 | – |
per 1 mol of | 48.20 | 43.55 | 15.6 | – |
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 |
|---|---|---|---|---|
| CsHCO3 (cr) | -966.1[1] | – | – | – |
| CsHCO3 (ai) | -950.27[1] | -878.78[1] | 224.3[1] | – |
* (cr):Crystalline solid, (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 |
|---|---|---|---|---|
| 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] | – | – | – |
| CO2 (g) | -393.509[1] | -394.359[1] | 213.74[1] | 37.11[1] |
| CO2 (ao) | -413.80[1] | -385.98[1] | 117.6[1] | – |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (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°, -966.1 kJ · mol−1
- ^ ΔfH°, -950.27 kJ · mol−1
- ^ ΔfG°, -878.78 kJ · mol−1
- ^ S°, 224.3 J · K−1 · 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°, -393.509 kJ · mol−1
- ^ ΔfG°, -394.359 kJ · mol−1
- ^ S°, 213.74 J · K−1 · mol−1
- ^ Cp°, 37.11 J · K−1 · mol−1
- ^ ΔfH°, -413.80 kJ · mol−1
- ^ ΔfG°, -385.98 kJ · mol−1
- ^ S°, 117.6 J · K−1 · mol−1