Pb → Pb2+ + 2e−
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Oxidation of yields lead(II) ion (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
General equation
- Oxidation of oxidizable species
- ReactantReducing agent ⟶ ProductOxidation product + e−
Oxidation state of each atom
Reactants
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Pb2+ | Lead(II) ion | 1 | Oxidized | – |
| e− | Electron | 2 | – | Electron |
Thermodynamic changes
Changes in standard condition
| 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 | −1.7 | −24.43 | −54.3 | – |
| −1.7 | −24.43 | −54.3 | – | |
per 1 mol of Lead(II) ion | −1.7 | −24.43 | −54.3 | – |
per 1 mol of Electron | −0.85 | −12.21 | −27.1 | – |
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 |
|---|---|---|---|---|
| (cr) | 0[1] | 0[1] | 64.81[1] | 26.44[1] |
| (g) | 195.0[1] | 161.9[1] | 175.373[1] | 20.786[1] |
* (cr):Crystalline solid, (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 |
|---|---|---|---|---|
| Pb2+ (g) | 2373.33[1] | – | – | – |
| Pb2+ (ao) | -1.7[1] | -24.43[1] | 10.5[1] | – |
| e− | – | – | – | – |
* (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 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 64.81 J · K−1 · mol−1
- ^ Cp°, 26.44 J · K−1 · mol−1
- ^ ΔfH°, 195.0 kJ · mol−1
- ^ ΔfG°, 161.9 kJ · mol−1
- ^ S°, 175.373 J · K−1 · mol−1
- ^ Cp°, 20.786 J · K−1 · mol−1
- ^ ΔfH°, 2373.33 kJ · mol−1
- ^ ΔfH°, -1.7 kJ · mol−1
- ^ ΔfG°, -24.43 kJ · mol−1
- ^ S°, 10.5 J · K−1 · mol−1