Cd2+ + SO42− → CdSO4
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- Reaction of cadmium ion and sulfate ion
The reaction of cadmium ion and sulfate ion yields cadmium sulfate. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of cadmium ion and sulfate ion
General equation
- Reaction of cation and anion
- CationLewis acid + AnionLewis base ⟶ ProductLewis conjugate + (H2O)
Oxidation state of each atom
- Reaction of cadmium ion and sulfate ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Cd2+ | Cadmium ion | 1 | Lewis acid | Cation |
| SO42− | Sulfate ion | 1 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CdSO4 | Cadmium sulfate | 1 | Lewis conjugate | – |
Thermodynamic changes
Changes in standard condition
- Reaction of cadmium ion and sulfate ion◆
ΔrG −0.58 kJ/mol K 1.26 × 100 pK −0.10
| 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 | 51.89 | −0.58 | 176.1 | – |
per 1 mol of Cadmium ion | 51.89 | −0.580 | 176.1 | – |
per 1 mol of Sulfate ion | 51.89 | −0.580 | 176.1 | – |
per 1 mol of | 51.89 | −0.580 | 176.1 | – |
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 |
|---|---|---|---|---|
| Cd2+ (g) | 2623.54[1] | – | – | – |
| Cd2+ (ao) | -75.90[1] | -77.612[1] | -73.2[1] | – |
| SO42− (ao) | -909.27[1] | -744.53[1] | 20.1[1] | -293[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 |
|---|---|---|---|---|
| CdSO4 (cr) | -933.28[1] | -822.72[1] | 123.039[1] | 99.58[1] |
| CdSO4 (ai) | -985.16[1] | -822.13[1] | -53.1[1] | – |
| CdSO4 (cr) 1 hydrate | -1239.55[1] | -1068.73[1] | 154.030[1] | 134.56[1] |
| CdSO4 (cr) 8/3 hydrate | -1729.4[1] | -1465.141[1] | 229.630[1] | 213.26[1] |
* (cr):Crystalline solid, (ai):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°, 2623.54 kJ · mol−1
- ^ ΔfH°, -75.90 kJ · mol−1
- ^ ΔfG°, -77.612 kJ · mol−1
- ^ S°, -73.2 J · K−1 · mol−1
- ^ ΔfH°, -909.27 kJ · mol−1
- ^ ΔfG°, -744.53 kJ · mol−1
- ^ S°, 20.1 J · K−1 · mol−1
- ^ Cp°, -293. J · K−1 · mol−1
- ^ ΔfH°, -933.28 kJ · mol−1
- ^ ΔfG°, -822.72 kJ · mol−1
- ^ S°, 123.039 J · K−1 · mol−1
- ^ Cp°, 99.58 J · K−1 · mol−1
- ^ ΔfH°, -985.16 kJ · mol−1
- ^ ΔfG°, -822.13 kJ · mol−1
- ^ S°, -53.1 J · K−1 · mol−1
- ^ ΔfH°, -1239.55 kJ · mol−1
- ^ ΔfG°, -1068.73 kJ · mol−1
- ^ S°, 154.030 J · K−1 · mol−1
- ^ Cp°, 134.56 J · K−1 · mol−1
- ^ ΔfH°, -1729.4 kJ · mol−1
- ^ ΔfG°, -1465.141 kJ · mol−1
- ^ S°, 229.630 J · K−1 · mol−1
- ^ Cp°, 213.26 J · K−1 · mol−1