NH4CN + 5H2O 💧⚡→ 2HNO2 + CO↑ + 6H2↑
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- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
Electrolysis of aqueous ammonium cyanide yields nitrous acid, carbon monoxide, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
General equation
- Electrolysis of aqueous solution with water as oxidizing agent
- Miscible with water/Very soluble in water/Soluble in waterReducing agent + H2OOxidizing agent💧⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NH4CN | Ammonium cyanide | 1 | Reducing | Very soluble in water |
| H2O | Water | 5 | Oxidizing | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| HNO2 | Nitrous acid | 2 | Oxidized | – |
| CO | Carbon monoxide | 1 | – | – |
| 6 | Reduced | – |
Thermodynamic changes
Changes in standard condition (1)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent◆
ΔrG 854.3 kJ/mol K 0.22 × 10−149 pK 149.67
| 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 | 1062.2 | 854.3 | 695.9 | – |
per 1 mol of | 1062.2 | 854.3 | 695.9 | – |
per 1 mol of | 212.44 | 170.9 | 139.2 | – |
per 1 mol of | 531.10 | 427.1 | 347.9 | – |
per 1 mol of | 1062.2 | 854.3 | 695.9 | – |
| 177.03 | 142.4 | 116.0 | – |
Changes in standard condition (2)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent◆
ΔrG 959.9 kJ/mol K 0.68 × 10−168 pK 168.17
| 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 | 1037.0 | 959.9 | 3374 | – |
per 1 mol of | 1037.0 | 959.9 | 3374 | – |
per 1 mol of | 207.40 | 192.0 | 674.8 | – |
per 1 mol of | 518.50 | 479.9 | 1687 | – |
per 1 mol of | 1037.0 | 959.9 | 3374 | – |
| 172.83 | 160.0 | 562.3 | – |
Changes in standard condition (3)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent◆
ΔrG 871.5 kJ/mol K 0.21 × 10−152 pK 152.68
| 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 | 1051.8 | 871.5 | 602.9 | – |
per 1 mol of | 1051.8 | 871.5 | 602.9 | – |
per 1 mol of | 210.36 | 174.3 | 120.6 | – |
per 1 mol of | 525.90 | 435.8 | 301.4 | – |
per 1 mol of | 1051.8 | 871.5 | 602.9 | – |
| 175.30 | 145.3 | 100.5 | – |
Changes in standard condition (4)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent◆
ΔrG 977.1 kJ/mol K 0.66 × 10−171 pK 171.18
| 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 | 1026.6 | 977.1 | 3281 | – |
per 1 mol of | 1026.6 | 977.1 | 3281 | – |
per 1 mol of | 205.32 | 195.4 | 656.2 | – |
per 1 mol of | 513.30 | 488.6 | 1641 | – |
per 1 mol of | 1026.6 | 977.1 | 3281 | – |
| 171.10 | 162.8 | 546.8 | – |
Changes in standard condition (5)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
| 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 | 1048.0 | – | – | – |
per 1 mol of | 1048.0 | – | – | – |
per 1 mol of | 209.60 | – | – | – |
per 1 mol of | 524.00 | – | – | – |
per 1 mol of | 1048.0 | – | – | – |
| 174.67 | – | – | – |
Changes in standard condition (6)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
| 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 | 1022.8 | – | – | – |
per 1 mol of | 1022.8 | – | – | – |
per 1 mol of | 204.56 | – | – | – |
per 1 mol of | 511.40 | – | – | – |
per 1 mol of | 1022.8 | – | – | – |
| 170.47 | – | – | – |
Changes in standard condition (7)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
| 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 | 1037.6 | – | – | – |
per 1 mol of | 1037.6 | – | – | – |
per 1 mol of | 207.52 | – | – | – |
per 1 mol of | 518.80 | – | – | – |
per 1 mol of | 1037.6 | – | – | – |
| 172.93 | – | – | – |
Changes in standard condition (8)
- Electrolysis of aqueous ammonium cyanide with water as oxidizing agent
| 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 | 1012.4 | – | – | – |
per 1 mol of | 1012.4 | – | – | – |
per 1 mol of | 202.48 | – | – | – |
per 1 mol of | 506.20 | – | – | – |
per 1 mol of | 1012.4 | – | – | – |
| 168.73 | – | – | – |
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 |
|---|---|---|---|---|
| NH4CN (cr) | 0.42[1] | – | – | 134[1] |
| NH4CN (ai) | 18.0[1] | 93.0[1] | 207.5[1] | – |
| NH4CN (aq) | 32.2[1] | – | – | – |
| H2O (cr) | – | – | – | – |
| H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
| H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):Aqueous solution, (l):Liquid, (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 |
|---|---|---|---|---|
| HNO2 (g) cis | -77.99[1] | -42.94[1] | 248.76[1] | 44.77[1] |
| HNO2 (g) trans | -80.12[1] | -45.24[1] | 249.22[1] | 46.07[1] |
| HNO2 (g) | -79.5[1] | -46.0[1] | 254.1[1] | 45.6[1] |
| HNO2 (ao) | -119.2[1] | -50.6[1] | 135.6[1] | – |
| CO (g) | -110.525[1] | -137.168[1] | 197.674[1] | 29.142[1] |
| CO (ao) | -120.96[1] | -119.90[1] | 104.6[1] | – |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | – |
* (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°, 0.42 kJ · mol−1
- ^ Cp°, 134. J · K−1 · mol−1
- ^ ΔfH°, 18.0 kJ · mol−1
- ^ ΔfG°, 93.0 kJ · mol−1
- ^ S°, 207.5 J · K−1 · mol−1
- ^ ΔfH°, 32.2 kJ · 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
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1
- ^ ΔfH°, -77.99 kJ · mol−1
- ^ ΔfG°, -42.94 kJ · mol−1
- ^ S°, 248.76 J · K−1 · mol−1
- ^ Cp°, 44.77 J · K−1 · mol−1
- ^ ΔfH°, -80.12 kJ · mol−1
- ^ ΔfG°, -45.24 kJ · mol−1
- ^ S°, 249.22 J · K−1 · mol−1
- ^ Cp°, 46.07 J · K−1 · mol−1
- ^ ΔfH°, -79.5 kJ · mol−1
- ^ ΔfG°, -46.0 kJ · mol−1
- ^ S°, 254.1 J · K−1 · mol−1
- ^ Cp°, 45.6 J · K−1 · mol−1
- ^ ΔfH°, -119.2 kJ · mol−1
- ^ ΔfG°, -50.6 kJ · mol−1
- ^ S°, 135.6 J · K−1 · mol−1
- ^ ΔfH°, -110.525 kJ · mol−1
- ^ ΔfG°, -137.168 kJ · mol−1
- ^ S°, 197.674 J · K−1 · mol−1
- ^ Cp°, 29.142 J · K−1 · mol−1
- ^ ΔfH°, -120.96 kJ · mol−1
- ^ ΔfG°, -119.90 kJ · mol−1
- ^ S°, 104.6 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