Na+ + S2O32− → NaS2O3−
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- Reaction of sodium ion and thiosulfate ion
- Na+Sodium ion + S2O32−Thiosulfate ionNaS2O3−Sodium thiosulfate ion⟶
The reaction of sodium ion and thiosulfate ion yields sodium thiosulfate 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 sodium ion and thiosulfate ion
- Na+Sodium ion + S2O32−Thiosulfate ionNaS2O3−Sodium thiosulfate ion⟶
General equation
- Reaction of cation and anion
- CationLewis acid + AnionLewis base ⟶ ProductLewis conjugate + (H2O)
Oxidation state of each atom
- Reaction of sodium ion and thiosulfate ion
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na+ | Sodium ion | 1 | Lewis acid | Cation |
| S2O32− | Thiosulfate ion | 1 | Lewis base | Anion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaS2O3− | Sodium thiosulfate ion | 1 | Lewis conjugate | – |
Thermodynamic changes
Changes in standard condition
- Reaction of sodium ion and thiosulfate ion◆
ΔrG −3.6 kJ/mol K 4.27 × 100 pK −0.63 - Na+Un-ionized aqueous solution + S2O32−Un-ionized aqueous solutionNaS2O3−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 | 4.4 | −3.6 | 27 | – |
per 1 mol of Sodium ion | 4.4 | −3.6 | 27 | – |
per 1 mol of Thiosulfate ion | 4.4 | −3.6 | 27 | – |
per 1 mol of Sodium thiosulfate ion | 4.4 | −3.6 | 27 | – |
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 |
|---|---|---|---|---|
| Na+ (g) | 609.358[1] | – | – | – |
| Na+ (ao) | -240.12[1] | -261.905[1] | 59.0[1] | 46.4[1] |
| S2O32− (ao) | -652.3[1] | -522.5[1] | 67[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 |
|---|---|---|---|---|
| NaS2O3− (ao) | -887.97[1] | -787.99[1] | 152.7[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)