2(NH4)3AsO4 + 9H2O 💧⚡→ 3NH4NO3 + 2H3AsO4 + 12H2↑
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- Electrolysis of aqueous ammonium arsenate with water as non-redox agent
Electrolysis of aqueous ammonium arsenate yields ammonium nitrate, arsenic acid, 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 arsenate with water as non-redox agent
General equation
- Electrolysis of aqueous solution with water as non redox agent
- Miscible with water/Very soluble in water/Soluble in waterSelf redox agent + H2ONon-redox agent💧⚡⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous ammonium arsenate with water as non-redox agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| (NH4)3AsO4 | Ammonium arsenate | 2 | Self redox agent | Soluble in water |
| H2O | Water | 9 | – | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NH4NO3 | Ammonium nitrate | 3 | Oxidized | – |
| H3AsO4 | Arsenic acid | 2 | – | – |
| 12 | Reduced | – |
Thermodynamic changes
Changes in standard condition
- Electrolysis of aqueous ammonium arsenate with water as non-redox agent
- 2(NH4)3AsO4Crystalline solid + 9H2OLiquid3NH4NO3Crystalline solid + 2H3AsO4Crystalline solid + 12↑Gas💧⚡⟶
| 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 | 2235.6 | – | – | – |
per 1 mol of | 1117.8 | – | – | – |
per 1 mol of | 248.40 | – | – | – |
per 1 mol of | 745.20 | – | – | – |
per 1 mol of | 1117.8 | – | – | – |
| 186.30 | – | – | – |
Changes in aqueous solution (1)
- Electrolysis of aqueous ammonium arsenate with water as non-redox agent◆
ΔrG 1803.1 kJ/mol K 0.13 × 10−315 pK 315.89 - 2(NH4)3AsO4Ionized aqueous solution + 9H2OLiquid3NH4NO3Ionized aqueous solution + 2H3AsO4Un-ionized aqueous solution + 12↑Gas💧⚡⟶
| 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 | 2319.2 | 1803.1 | 1732 | – |
per 1 mol of | 1159.6 | 901.55 | 866.0 | – |
per 1 mol of | 257.69 | 200.34 | 192.4 | – |
per 1 mol of | 773.07 | 601.03 | 577.3 | – |
per 1 mol of | 1159.6 | 901.55 | 866.0 | – |
| 193.27 | 150.26 | 144.3 | – |
Changes in aqueous solution (2)
- Electrolysis of aqueous ammonium arsenate with water as non-redox agent◆
ΔrG 2014.3 kJ/mol K 0.13 × 10−352 pK 352.89 - 2(NH4)3AsO4Ionized aqueous solution + 9H2OLiquid3NH4NO3Ionized aqueous solution + 2H3AsO4Un-ionized aqueous solution + 12↑Un-ionized aqueous solution💧⚡⟶
| 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 | 2268.8 | 2014.3 | 7087 | – |
per 1 mol of | 1134.4 | 1007.1 | 3544 | – |
per 1 mol of | 252.09 | 223.81 | 787.4 | – |
per 1 mol of | 756.27 | 671.43 | 2362 | – |
per 1 mol of | 1134.4 | 1007.1 | 3544 | – |
| 189.07 | 167.86 | 590.6 | – |
Changes in aqueous solution (3)
- Electrolysis of aqueous ammonium arsenate with water as non-redox agent
- 2(NH4)3AsO4Ionized aqueous solution + 9H2OLiquid3NH4NO3Ionized aqueous solution + 2H3AsO4Aqueous solution + 12↑Gas💧⚡⟶
| 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 | 2315.0 | – | – | – |
per 1 mol of | 1157.5 | – | – | – |
per 1 mol of | 257.22 | – | – | – |
per 1 mol of | 771.67 | – | – | – |
per 1 mol of | 1157.5 | – | – | – |
| 192.92 | – | – | – |
Changes in aqueous solution (4)
- Electrolysis of aqueous ammonium arsenate with water as non-redox agent
- 2(NH4)3AsO4Ionized aqueous solution + 9H2OLiquid3NH4NO3Ionized aqueous solution + 2H3AsO4Aqueous solution + 12↑Un-ionized aqueous solution💧⚡⟶
| 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 | 2264.6 | – | – | – |
per 1 mol of | 1132.3 | – | – | – |
per 1 mol of | 251.62 | – | – | – |
per 1 mol of | 754.87 | – | – | – |
per 1 mol of | 1132.3 | – | – | – |
| 188.72 | – | – | – |
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 |
|---|---|---|---|---|
| (NH4)3AsO4 (cr) | -1286.2[1] | – | – | – |
| (NH4)3AsO4 (ai) | -1285.66[1] | -886.32[1] | 177.4[1] | – |
| (NH4)3AsO4 (cr) 3 hydrate | -2166.9[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, (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 |
|---|---|---|---|---|
| NH4NO3 (cr) | -365.56[1] | -183.87[1] | 151.08[1] | 139.3[1] |
| NH4NO3 (ai) | -339.87[1] | -190.56[1] | 259.8[1] | -6.7[1] |
| H3AsO4 (cr) | -906.3[1] | – | – | – |
| H3AsO4 (ao) | -902.5[1] | -766.0[1] | 184[1] | – |
| H3AsO4 (aq) | -904.6[1] | – | – | – |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (aq):Aqueous solution, (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)
- ^ ΔfH°, -1286.2 kJ · mol−1
- ^ ΔfH°, -1285.66 kJ · mol−1
- ^ ΔfG°, -886.32 kJ · mol−1
- ^ S°, 177.4 J · K−1 · mol−1
- ^ ΔfH°, -2166.9 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°, -365.56 kJ · mol−1
- ^ ΔfG°, -183.87 kJ · mol−1
- ^ S°, 151.08 J · K−1 · mol−1
- ^ Cp°, 139.3 J · K−1 · mol−1
- ^ ΔfH°, -339.87 kJ · mol−1
- ^ ΔfG°, -190.56 kJ · mol−1
- ^ S°, 259.8 J · K−1 · mol−1
- ^ Cp°, -6.7 J · K−1 · mol−1
- ^ ΔfH°, -906.3 kJ · mol−1
- ^ ΔfH°, -902.5 kJ · mol−1
- ^ ΔfG°, -766.0 kJ · mol−1
- ^ S°, 184. J · K−1 · mol−1
- ^ ΔfH°, -904.6 kJ · 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