3NH4HCO3 + 6e− → 3NH4+ + CH3O− + 2CO32− + 2O2−
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- Reduction of ammonium hydrogencarbonate
- 3NH4HCO3Ammonium hydrogencarbonate + 6e−Electron3NH4+Ammonium ion + CH3O−Methoxide ion + 2CO32−Carbonate ion + 2O2−Oxide ion⟶
Reduction of ammonium hydrogencarbonate yields ammonium ion, methoxide ion, carbonate ion, and oxide ion (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reduction of ammonium hydrogencarbonate
- 3NH4HCO3Ammonium hydrogencarbonate + 6e−Electron3NH4+Ammonium ion + CH3O−Methoxide ion + 2CO32−Carbonate ion + 2O2−Oxide ion⟶
General equation
- Reduction of reducible species
- ReactantOxidizing agent + e− ⟶ ProductReduction product
Oxidation state of each atom
- Reduction of ammonium hydrogencarbonate
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
NH4HCO3 | Ammonium hydrogencarbonate | 3 | Oxidizing | – |
e− | Electron | 6 | – | Electron |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
NH4+ | Ammonium ion | 3 | – | – |
CH3O− | Methoxide ion | 1 | Reduced | – |
CO32− | Carbonate ion | 2 | – | – |
O2− | Oxide ion | 2 | – | – |
Thermodynamic changes
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 |
---|---|---|---|---|
NH4HCO3 (cr) | -849.4[1] | -665.9[1] | 120.9[1] | – |
NH4HCO3 (ai) | -824.50[1] | -666.07[1] | 204.6[1] | – |
NH4HCO3 (aq) | -821.7[1] | – | – | – |
e− | – | – | – | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):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 |
---|---|---|---|---|
NH4+ (ao) | -132.51[1] | -79.31[1] | 113.4[1] | 79.9[1] |
CH3O− | – | – | – | – |
CO32− (ao) | -677.14[1] | -527.81[1] | -56.9[1] | – |
O2− | – | – | – | – |
* (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°, -849.4 kJ · mol−1
- ^ ΔfG°, -665.9 kJ · mol−1
- ^ S°, 120.9 J · K−1 · mol−1
- ^ ΔfH°, -824.50 kJ · mol−1
- ^ ΔfG°, -666.07 kJ · mol−1
- ^ S°, 204.6 J · K−1 · mol−1
- ^ ΔfH°, -821.7 kJ · mol−1
- ^ ΔfH°, -132.51 kJ · mol−1
- ^ ΔfG°, -79.31 kJ · mol−1
- ^ S°, 113.4 J · K−1 · mol−1
- ^ Cp°, 79.9 J · K−1 · mol−1
- ^ ΔfH°, -677.14 kJ · mol−1
- ^ ΔfG°, -527.81 kJ · mol−1
- ^ S°, -56.9 J · K−1 · mol−1