Pb2+ + I− → PbI+
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- Reaction of lead(II) ion and iodide ion
- Pb2+Lead(II) ion + I−Iodide ionPbI+Lead(II) iodide ion⟶
The reaction of lead(II) ion and iodide ion yields lead(II) iodide ion (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of lead(II) ion and iodide ion
- Pb2+Lead(II) ion + I−Iodide ionPbI+Lead(II) iodide ion⟶
General equation
- Reaction of cation and anion
- CationLewis acid + AnionLewis base ⟶ ProductLewis conjugate + (H2O)
Oxidation state of each atom
- Reaction of lead(II) ion and iodide ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Pb2+ | Lead(II) ion | 1 | Lewis acid | Cation |
| I− | Iodide ion | 1 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| PbI+ | Lead(II) iodide ion | 1 | Lewis conjugate | – |
Thermodynamic changes
Changes in standard condition
- Reaction of lead(II) ion and iodide ion◆
ΔrG −11.0 kJ/mol K 8.46 × 101 pK −1.93 - Pb2+Un-ionized aqueous solution + I−Un-ionized aqueous solutionPbI+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 | – | −11.0 | – | – |
per 1 mol of Lead(II) ion | – | −11.0 | – | – |
per 1 mol of Iodide ion | – | −11.0 | – | – |
per 1 mol of Lead(II) iodide ion | – | −11.0 | – | – |
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 |
|---|---|---|---|---|
| Pb2+ (g) | 2373.33[1] | – | – | – |
| Pb2+ (ao) | -1.7[1] | -24.43[1] | 10.5[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
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 |
|---|---|---|---|---|
| PbI+ (ao) | – | -87.0[1] | – | – |
* (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)