Mn(OH)2 + CaO → MnO + Ca(OH)2
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The reaction of manganese(II) hydroxide and calcium oxide yields manganese(II) oxide and calcium hydroxide. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of manganese(II) hydroxide and calcium oxide
General equation
- Hydroxide baseLewis base + Dehydrating basic oxideLewis acid ⟶ Basic oxide + Hydroxide baseLewis conjugate
Oxidation state of each atom
- Reaction of manganese(II) hydroxide and calcium oxide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Mn(OH)2 | Manganese(II) hydroxide | 1 | Lewis base | Hydroxide base |
| CaO | Calcium oxide | 1 | Lewis acid | Dehydrating basic oxide |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| MnO | Manganese(II) oxide | 1 | – | Basic oxide |
| Ca(OH)2 | Calcium hydroxide | 1 | Lewis conjugate | Hydroxide base |
Thermodynamic changes
Changes in standard condition
- Reaction of manganese(II) hydroxide and calcium oxide◆
ΔrG −42.4 kJ/mol K 2.68 × 107 pK −7.43
| 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 | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
Changes in aqueous solution
- Reaction of manganese(II) hydroxide and calcium oxide◆
ΔrG −42.4 kJ/mol K 2.68 × 107 pK −7.43
| 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 | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
per 1 mol of | −40.8 | −42.4 | 4.2 | – |
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 |
|---|---|---|---|---|
| Mn(OH)2 (am) precipitated | -695.4[1] | -615.0[1] | 99.2[1] | – |
| CaO (cr) | -635.09[1] | -604.03[1] | 39.75[1] | 42.80[1] |
| CaO (g) | – | – | – | – |
* (am):Amorphous solid, (cr):Crystalline solid, (g):Gas
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 |
|---|---|---|---|---|
| MnO (cr) | -385.22[1] | -362.90[1] | 59.71[1] | 45.44[1] |
| MnO (g) | 124.22[1] | – | – | – |
| Ca(OH)2 (cr) | -986.09[1] | -898.49[1] | 83.39[1] | 87.49[1] |
| Ca(OH)2 (g) | -544[1] | – | – | – |
| Ca(OH)2 (ai) | -1002.82[1] | -868.07[1] | -74.5[1] | – |
| Ca(OH)2 (cr) 2 hydrate | -1218.4[1] | – | – | – |
* (cr):Crystalline solid, (g):Gas, (ai):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°, -695.4 kJ · mol−1
- ^ ΔfG°, -615.0 kJ · mol−1
- ^ S°, 99.2 J · K−1 · mol−1
- ^ ΔfH°, -635.09 kJ · mol−1
- ^ ΔfG°, -604.03 kJ · mol−1
- ^ S°, 39.75 J · K−1 · mol−1
- ^ Cp°, 42.80 J · K−1 · mol−1
- ^ ΔfH°, -385.22 kJ · mol−1
- ^ ΔfG°, -362.90 kJ · mol−1
- ^ S°, 59.71 J · K−1 · mol−1
- ^ Cp°, 45.44 J · K−1 · mol−1
- ^ ΔfH°, 124.22 kJ · mol−1
- ^ ΔfH°, -986.09 kJ · mol−1
- ^ ΔfG°, -898.49 kJ · mol−1
- ^ S°, 83.39 J · K−1 · mol−1
- ^ Cp°, 87.49 J · K−1 · mol−1
- ^ ΔfH°, -544. kJ · mol−1
- ^ ΔfH°, -1002.82 kJ · mol−1
- ^ ΔfG°, -868.07 kJ · mol−1
- ^ S°, -74.5 J · K−1 · mol−1
- ^ ΔfH°, -1218.4 kJ · mol−1