16NH4HCO3 + 6e− → 8(NH4)2CO3 + CH3O− + 7HCO3− + 2H3O+
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- Reduction of ammonium hydrogencarbonate
- 16NH4HCO3Ammonium hydrogencarbonate + 6e−Electron8(NH4)2CO3Ammonium carbonate + CH3O−Methoxide ion + 7HCO3−Hydrogencarbonate ion + 2H3O+Hydronium ion⟶
Reduction of ammonium hydrogencarbonate yields ammonium carbonate, methoxide ion, hydrogencarbonate ion, and hydronium 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
- 16NH4HCO3Ammonium hydrogencarbonate + 6e−Electron8(NH4)2CO3Ammonium carbonate + CH3O−Methoxide ion + 7HCO3−Hydrogencarbonate ion + 2H3O+Hydronium 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 | 16 | Oxidizing | – |
| e− | Electron | 6 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| (NH4)2CO3 | Ammonium carbonate | 8 | – | – |
| CH3O− | Methoxide ion | 1 | Reduced | – |
| HCO3− | Hydrogencarbonate ion | 7 | – | – |
| H3O+ | Hydronium 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)2CO3 (ai) | -942.15[1] | -686.42[1] | 169.9[1] | – |
| CH3O− | – | – | – | – |
| HCO3− (ao) | -691.99[1] | -586.77[1] | 91.2[1] | – |
| H3O+ (ao) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
* (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°, -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°, -942.15 kJ · mol−1
- ^ ΔfG°, -686.42 kJ · mol−1
- ^ S°, 169.9 J · K−1 · mol−1
- ^ ΔfH°, -691.99 kJ · mol−1
- ^ ΔfG°, -586.77 kJ · mol−1
- ^ S°, 91.2 J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1