LiI → Li+ + I−
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- Electrolytic dissociation of lithium iodide
Electrolytic dissociation of lithium iodide yields lithium ion and iodide ion. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolytic dissociation of lithium iodide
General equation
- Electrolytic dissociation of salt
- SaltLewis conjugate ⟶ CationLewis acid + AnionLewis base
Oxidation state of each atom
- Electrolytic dissociation of lithium iodide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| LiI | Lithium iodide | 1 | Lewis conjugate | Salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Li+ | Lithium ion | 1 | Lewis acid | Cation |
| I− | Iodide ion | 1 | Lewis base | Anion |
Thermodynamic changes
Changes in standard condition
- Electrolytic dissociation of lithium iodide◆
ΔrG −74.59 kJ/mol K 1.17 × 1013 pK −13.07
| 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 | −63.27 | −74.59 | 37.9 | −124.7 |
per 1 mol of | −63.27 | −74.59 | 37.9 | −124.7 |
per 1 mol of Lithium ion | −63.27 | −74.59 | 37.9 | −124.7 |
per 1 mol of Iodide ion | −63.27 | −74.59 | 37.9 | −124.7 |
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 |
|---|---|---|---|---|
| LiI (cr) | -270.41[1] | -270.29[1] | 86.78[1] | 51.04[1] |
| LiI (g) | -81.09[1] | -124.34[1] | 232.321[1] | 34.64[1] |
| LiI (ai) | -333.67[1] | -344.8[1] | 124.7[1] | -73.6[1] |
| LiI (cr) 1 hydrate | -590.32[1] | -531.3[1] | 123.0[1] | – |
| LiI (cr) 2 hydrate | -890.40[1] | -780.2[1] | 184[1] | – |
| LiI (cr) 3 hydrate | -1192.15[1] | -1032.13[1] | 250.2[1] | – |
* (cr):Crystalline solid, (g):Gas, (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 |
|---|---|---|---|---|
| Li+ (g) | 685.783[1] | – | – | – |
| Li+ (ao) | -278.49[1] | -293.31[1] | 13.4[1] | 68.6[1] |
| I− (g) | -194.6[1] | – | – | – |
| I− (ao) | -55.19[1] | -51.57[1] | 111.3[1] | -142.3[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°, -270.41 kJ · mol−1
- ^ ΔfG°, -270.29 kJ · mol−1
- ^ S°, 86.78 J · K−1 · mol−1
- ^ Cp°, 51.04 J · K−1 · mol−1
- ^ ΔfH°, -81.09 kJ · mol−1
- ^ ΔfG°, -124.34 kJ · mol−1
- ^ S°, 232.321 J · K−1 · mol−1
- ^ Cp°, 34.64 J · K−1 · mol−1
- ^ ΔfH°, -333.67 kJ · mol−1
- ^ ΔfG°, -344.8 kJ · mol−1
- ^ S°, 124.7 J · K−1 · mol−1
- ^ Cp°, -73.6 J · K−1 · mol−1
- ^ ΔfH°, -590.32 kJ · mol−1
- ^ ΔfG°, -531.3 kJ · mol−1
- ^ S°, 123.0 J · K−1 · mol−1
- ^ ΔfH°, -890.40 kJ · mol−1
- ^ ΔfG°, -780.2 kJ · mol−1
- ^ S°, 184. J · K−1 · mol−1
- ^ ΔfH°, -1192.15 kJ · mol−1
- ^ ΔfG°, -1032.13 kJ · mol−1
- ^ S°, 250.2 J · K−1 · mol−1
- ^ ΔfH°, 685.783 kJ · mol−1
- ^ ΔfH°, -278.49 kJ · mol−1
- ^ ΔfG°, -293.31 kJ · mol−1
- ^ S°, 13.4 J · K−1 · mol−1
- ^ Cp°, 68.6 J · K−1 · mol−1
- ^ ΔfH°, -194.6 kJ · mol−1
- ^ ΔfH°, -55.19 kJ · mol−1
- ^ ΔfG°, -51.57 kJ · mol−1
- ^ S°, 111.3 J · K−1 · mol−1
- ^ Cp°, -142.3 J · K−1 · mol−1