SnBr2 + Na2S 💧→ SnS↓ + 2NaBr
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- Reaction of tin(II) bromide and sodium sulfide
The reaction of tin(II) bromide and sodium sulfide yields tin(II) sulfide and sodium bromide. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of tin(II) bromide and sodium sulfide
General equation
- Precipitation reaction
- Miscible with water/Very soluble in water/Soluble in waterLewis acid + Miscible with water/Very soluble in water/Soluble in waterLewis base💧⟶ Insoluble in water/Very slightly soluble in water/Slightly soluble in waterLewis conjugate + Product(Non-redox product)
Oxidation state of each atom
- Reaction of tin(II) bromide and sodium sulfide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SnBr2 | Tin(II) bromide | 1 | Lewis acid | Very soluble in water |
| Na2S | Sodium sulfide | 1 | Lewis base | Soluble in water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SnS | Tin(II) sulfide | 1 | Lewis conjugate | Insoluble in water |
| NaBr | Sodium bromide | 2 | Non-redox product | – |
Thermodynamic changes
Changes in standard condition
- Reaction of tin(II) bromide and sodium sulfide
| 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 | −214 | – | – | – |
per 1 mol of | −214 | – | – | – |
per 1 mol of | −214 | – | – | – |
per 1 mol of | −214 | – | – | – |
per 1 mol of | −107 | – | – | – |
Changes in aqueous solution
- Reaction of tin(II) bromide and sodium sulfide
| 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 | −133 | – | – | – |
per 1 mol of | −133 | – | – | – |
per 1 mol of | −133 | – | – | – |
per 1 mol of | −133 | – | – | – |
per 1 mol of | −66.5 | – | – | – |
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 |
|---|---|---|---|---|
| SnBr2 (cr) | -243.5[1] | – | – | – |
| Na2S (cr) | -364.8[1] | -349.8[1] | 83.7[1] | – |
| Na2S (ai) | -447.3[1] | -438.1[1] | 103.3[1] | – |
| Na2S (cr) 4.5 hydrate | -1725.9[1] | – | – | – |
| Na2S (cr) 5 hydrate | -1886.6[1] | – | – | – |
| Na2S (cr) 9 hydrate | -3074.0[1] | – | – | – |
* (cr):Crystalline solid, (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 |
|---|---|---|---|---|
| SnS (cr) | -100[1] | -98.3[1] | 77.0[1] | 49.25[1] |
| SnS (g) | 119.2[1] | – | – | – |
| NaBr (cr) | -361.062[1] | -348.983[1] | 86.82[1] | 51.38[1] |
| NaBr (g) | -143.1[1] | -177.06[1] | 241.19[1] | 36.32[1] |
| NaBr (ai) | -361.665[1] | -365.849[1] | 141.4[1] | -95.4[1] |
| NaBr (cr) 2 hydrate | -951.94[1] | -828.29[1] | 179.1[1] | – |
* (cr):Crystalline solid, (g):Gas, (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°, -243.5 kJ · mol−1
- ^ ΔfH°, -364.8 kJ · mol−1
- ^ ΔfG°, -349.8 kJ · mol−1
- ^ S°, 83.7 J · K−1 · mol−1
- ^ ΔfH°, -447.3 kJ · mol−1
- ^ ΔfG°, -438.1 kJ · mol−1
- ^ S°, 103.3 J · K−1 · mol−1
- ^ ΔfH°, -1725.9 kJ · mol−1
- ^ ΔfH°, -1886.6 kJ · mol−1
- ^ ΔfH°, -3074.0 kJ · mol−1
- ^ ΔfH°, -100. kJ · mol−1
- ^ ΔfG°, -98.3 kJ · mol−1
- ^ S°, 77.0 J · K−1 · mol−1
- ^ Cp°, 49.25 J · K−1 · mol−1
- ^ ΔfH°, 119.2 kJ · mol−1
- ^ ΔfH°, -361.062 kJ · mol−1
- ^ ΔfG°, -348.983 kJ · mol−1
- ^ S°, 86.82 J · K−1 · mol−1
- ^ Cp°, 51.38 J · K−1 · mol−1
- ^ ΔfH°, -143.1 kJ · mol−1
- ^ ΔfG°, -177.06 kJ · mol−1
- ^ S°, 241.19 J · K−1 · mol−1
- ^ Cp°, 36.32 J · K−1 · mol−1
- ^ ΔfH°, -361.665 kJ · mol−1
- ^ ΔfG°, -365.849 kJ · mol−1
- ^ S°, 141.4 J · K−1 · mol−1
- ^ Cp°, -95.4 J · K−1 · mol−1
- ^ ΔfH°, -951.94 kJ · mol−1
- ^ ΔfG°, -828.29 kJ · mol−1
- ^ S°, 179.1 J · K−1 · mol−1