Cr(NO3)3 + 3e− → Cr3+ + NO↑ + 2NO2+ + 4O2−
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- Reduction of chromium(III) nitrate
- Cr(NO3)3Chromium(III) nitrate + 3e−ElectronCr3+Chromium(III) ion + NO↑Nitrogen monoxide + 2NO2+Nitronium ion + 4O2−Oxide ion⟶
Reduction of chromium(III) nitrate yields chromium(III) ion, nitrogen monoxide, nitronium 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 chromium(III) nitrate
- Cr(NO3)3Chromium(III) nitrate + 3e−ElectronCr3+Chromium(III) ion + NO↑Nitrogen monoxide + 2NO2+Nitronium ion + 4O2−Oxide ion⟶
General equation
- Reduction of reducible species
- ReactantOxidizing agent + e− ⟶ ProductReduction product
Oxidation state of each atom
- Reduction of chromium(III) nitrate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Cr(NO3)3 | Chromium(III) nitrate | 1 | Oxidizing | – |
| e− | Electron | 3 | – | Electron |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Cr3+ | Chromium(III) ion | 1 | – | – |
| NO | Nitrogen monoxide | 1 | Reduced | – |
| NO2+ | Nitronium ion | 2 | – | – |
| O2− | Oxide ion | 4 | – | – |
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 |
|---|---|---|---|---|
| Cr(NO3)3 (cr) 9 hydrate | – | – | – | 456.9[1] |
| e− | – | – | – | – |
* (cr):Crystalline solid
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 |
|---|---|---|---|---|
| Cr3+ (g) | 5648.4[1] | – | – | – |
| NO (g) | 90.25[1] | 86.55[1] | 210.761[1] | 29.844[1] |
| NO2+ (g) | 967.8[1] | – | – | – |
| O2− | – | – | – | – |
* (g):Gas
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)