N2O + 2KMnO4 → KNO3 + KNO2 + 2MnO2
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The reaction of dinitrotgen monoxide and potassium permanganate yields potassium nitrate, potassium nitrite, and manganese(IV) oxide (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 dinitrotgen monoxide and potassium permanganate
General equation
- Reaction of oxidizable species and oxidizing species
- Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of dinitrotgen monoxide and potassium permanganate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| N2O | Dinitrotgen monoxide | 1 | Reducing | Oxidizable |
| KMnO4 | Potassium permanganate | 2 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| KNO3 | Potassium nitrate | 1 | Oxidized | – |
| KNO2 | Potassium nitrite | 1 | Oxidized | – |
| MnO2 | Manganese(IV) oxide | 2 | Reduced | – |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of dinitrotgen monoxide and potassium permanganate◆
ΔrG −260.7 kJ/mol K 4.71 × 1045 pK −45.67
| 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 | −312.2 | −260.7 | −172.03 | 38.49 |
per 1 mol of | −312.2 | −260.7 | −172.03 | 38.49 |
per 1 mol of | −156.1 | −130.3 | −86.015 | 19.25 |
per 1 mol of | −312.2 | −260.7 | −172.03 | 38.49 |
per 1 mol of | −312.2 | −260.7 | −172.03 | 38.49 |
per 1 mol of | −156.1 | −130.3 | −86.015 | 19.25 |
Changes in standard condition (2)
- Reaction of dinitrotgen monoxide and potassium permanganate
| 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 | −277.1 | – | – | – |
per 1 mol of | −277.1 | – | – | – |
per 1 mol of | −138.6 | – | – | – |
per 1 mol of | −277.1 | – | – | – |
per 1 mol of | −277.1 | – | – | – |
per 1 mol of | −138.6 | – | – | – |
Changes in aqueous solution
- Reaction of dinitrotgen monoxide and potassium permanganate
| 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 | −325.2 | – | – | – |
per 1 mol of | −325.2 | – | – | – |
per 1 mol of | −162.6 | – | – | – |
per 1 mol of | −325.2 | – | – | – |
per 1 mol of | −325.2 | – | – | – |
per 1 mol of | −162.6 | – | – | – |
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 |
|---|---|---|---|---|
| N2O (g) | 82.05[1] | 104.20[1] | 219.85[1] | 38.45[1] |
| N2O (aq) | 56.1[1] | – | – | – |
| KMnO4 (cr) | -837.2[1] | -737.6[1] | 171.71[1] | 117.57[1] |
| KMnO4 (ai) | -793.8[1] | -730.5[1] | 293.7[1] | -60.2[1] |
* (g):Gas, (aq):Aqueous solution, (cr):Crystalline solid, (ai):Ionized 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 |
|---|---|---|---|---|
| KNO3 (cr) | -494.63[1] | -394.86[1] | 133.05[1] | 96.40[1] |
| KNO3 (ai) | -459.74[1] | -394.53[1] | 248.9[1] | -64.9[1] |
| KNO2 (cr) rhombic | -369.82[1] | -306.55[1] | 152.09[1] | 107.40[1] |
| KNO2 (ai) | -356.9[1] | -315.4[1] | 225.5[1] | – |
| MnO2 (cr) | -520.03[1] | -465.14[1] | 53.05[1] | 54.14[1] |
| MnO2 (am) precipitated | -502.5[1] | – | – | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (am):Amorphous solid
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°, 82.05 kJ · mol−1
- ^ ΔfG°, 104.20 kJ · mol−1
- ^ S°, 219.85 J · K−1 · mol−1
- ^ Cp°, 38.45 J · K−1 · mol−1
- ^ ΔfH°, 56.1 kJ · mol−1
- ^ ΔfH°, -837.2 kJ · mol−1
- ^ ΔfG°, -737.6 kJ · mol−1
- ^ S°, 171.71 J · K−1 · mol−1
- ^ Cp°, 117.57 J · K−1 · mol−1
- ^ ΔfH°, -793.8 kJ · mol−1
- ^ ΔfG°, -730.5 kJ · mol−1
- ^ S°, 293.7 J · K−1 · mol−1
- ^ Cp°, -60.2 J · K−1 · mol−1
- ^ ΔfH°, -494.63 kJ · mol−1
- ^ ΔfG°, -394.86 kJ · mol−1
- ^ S°, 133.05 J · K−1 · mol−1
- ^ Cp°, 96.40 J · K−1 · mol−1
- ^ ΔfH°, -459.74 kJ · mol−1
- ^ ΔfG°, -394.53 kJ · mol−1
- ^ S°, 248.9 J · K−1 · mol−1
- ^ Cp°, -64.9 J · K−1 · mol−1
- ^ ΔfH°, -369.82 kJ · mol−1
- ^ ΔfG°, -306.55 kJ · mol−1
- ^ S°, 152.09 J · K−1 · mol−1
- ^ Cp°, 107.40 J · K−1 · mol−1
- ^ ΔfH°, -356.9 kJ · mol−1
- ^ ΔfG°, -315.4 kJ · mol−1
- ^ S°, 225.5 J · K−1 · mol−1
- ^ ΔfH°, -520.03 kJ · mol−1
- ^ ΔfG°, -465.14 kJ · mol−1
- ^ S°, 53.05 J · K−1 · mol−1
- ^ Cp°, 54.14 J · K−1 · mol−1
- ^ ΔfH°, -502.5 kJ · mol−1