CaH2 + MnO → CaO + Mn + H2↑
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- Reaction of calcium hydride and manganese(II) oxide
The reaction of calcium hydride and manganese(II) oxide yields calcium oxide, , and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of calcium hydride and manganese(II) oxide
General equation
- Reaction of reducing species and hardly reducible species
- Reducing speciesReducing agent + Hardly reducible speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of calcium hydride and manganese(II) oxide
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
CaH2 | Calcium hydride | 1 | Reducing | Reducing |
MnO | Manganese(II) oxide | 1 | Oxidizing | Hardly reducible |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
CaO | Calcium oxide | 1 | – | – |
1 | Reduced | – | ||
1 | Oxidized | – |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of calcium hydride and manganese(II) oxide◆
ΔrG −93.9 kJ/mol K 2.82 × 1016 pK −16.45
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 | −63.7 | −93.9 | 101 | – |
per 1 mol of | −63.7 | −93.9 | 101 | – |
per 1 mol of | −63.7 | −93.9 | 101 | – |
per 1 mol of | −63.7 | −93.9 | 101 | – |
−63.7 | −93.9 | 101 | – | |
−63.7 | −93.9 | 101 | – |
Changes in standard condition (2)
- Reaction of calcium hydride and manganese(II) oxide
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 | – | – | 103 | – |
per 1 mol of | – | – | 103 | – |
per 1 mol of | – | – | 103 | – |
per 1 mol of | – | – | 103 | – |
– | – | 103 | – | |
– | – | 103 | – |
Changes in standard condition (3)
- Reaction of calcium hydride and manganese(II) oxide◆
ΔrG −92.5 kJ/mol K 1.60 × 1016 pK −16.21
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 | −62.1 | −92.5 | 101 | – |
per 1 mol of | −62.1 | −92.5 | 101 | – |
per 1 mol of | −62.1 | −92.5 | 101 | – |
per 1 mol of | −62.1 | −92.5 | 101 | – |
−62.1 | −92.5 | 101 | – | |
−62.1 | −92.5 | 101 | – |
Changes in aqueous solution (1)
- Reaction of calcium hydride and manganese(II) oxide◆
ΔrG −93.9 kJ/mol K 2.82 × 1016 pK −16.45
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 | −63.7 | −93.9 | 101 | – |
per 1 mol of | −63.7 | −93.9 | 101 | – |
per 1 mol of | −63.7 | −93.9 | 101 | – |
per 1 mol of | −63.7 | −93.9 | 101 | – |
−63.7 | −93.9 | 101 | – | |
−63.7 | −93.9 | 101 | – |
Changes in aqueous solution (2)
- Reaction of calcium hydride and manganese(II) oxide◆
ΔrG −76.3 kJ/mol K 2.33 × 1013 pK −13.37
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 | −67.9 | −76.3 | 547 | – |
per 1 mol of | −67.9 | −76.3 | 547 | – |
per 1 mol of | −67.9 | −76.3 | 547 | – |
per 1 mol of | −67.9 | −76.3 | 547 | – |
−67.9 | −76.3 | 547 | – | |
−67.9 | −76.3 | 547 | – |
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 |
---|---|---|---|---|
CaH2 (cr) | -186.2[1] | -147.2[1] | 42[1] | – |
MnO (cr) | -385.22[1] | -362.90[1] | 59.71[1] | 45.44[1] |
MnO (g) | 124.22[1] | – | – | – |
* (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 |
---|---|---|---|---|
CaO (cr) | -635.09[1] | -604.03[1] | 39.75[1] | 42.80[1] |
CaO (g) | – | – | – | – |
(cr) α | 0[1] | 0[1] | 32.01[1] | 26.32[1] |
(cr) β | – | – | 34.39[1] | 26.53[1] |
(cr) γ | 1.55[1] | 1.42[1] | 32.43[1] | 27.57[1] |
(g) | 280.7[1] | 238.5[1] | 173.70[1] | 20.79[1] |
(g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
(ao) | -4.2[1] | 17.6[1] | 577[1] | – |
* (cr):Crystalline solid, (g):Gas, (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°, -186.2 kJ · mol−1
- ^ ΔfG°, -147.2 kJ · mol−1
- ^ S°, 42. 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°, -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°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 32.01 J · K−1 · mol−1
- ^ Cp°, 26.32 J · K−1 · mol−1
- ^ S°, 34.39 J · K−1 · mol−1
- ^ Cp°, 26.53 J · K−1 · mol−1
- ^ ΔfH°, 1.55 kJ · mol−1
- ^ ΔfG°, 1.42 kJ · mol−1
- ^ S°, 32.43 J · K−1 · mol−1
- ^ Cp°, 27.57 J · K−1 · mol−1
- ^ ΔfH°, 280.7 kJ · mol−1
- ^ ΔfG°, 238.5 kJ · mol−1
- ^ S°, 173.70 J · K−1 · mol−1
- ^ Cp°, 20.79 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 130.684 J · K−1 · mol−1
- ^ Cp°, 28.824 J · K−1 · mol−1
- ^ ΔfH°, -4.2 kJ · mol−1
- ^ ΔfG°, 17.6 kJ · mol−1
- ^ S°, 577 J · K−1 · mol−1