SrI2 + 2NaF 💧→ SrF2↓ + 2NaI
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- Reaction of strontium iodide and sodium fluoride
The reaction of strontium iodide and sodium fluoride yields strontium fluoride and sodium iodide. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of strontium iodide and sodium fluoride
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 strontium iodide and sodium fluoride
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SrI2 | Strontium iodide | 1 | Lewis acid | Very soluble in water |
| NaF | Sodium fluoride | 2 | Lewis base | Very soluble in water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SrF2 | Strontium fluoride | 1 | Lewis conjugate | Very slightly soluble in water |
| NaI | Sodium iodide | 2 | Non-redox product | – |
Thermodynamic changes
Changes in standard condition
- Reaction of strontium iodide and sodium fluoride
| 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 | −86.5 | – | – | −1.1 |
per 1 mol of | −86.5 | – | – | −1.1 |
per 1 mol of | −43.3 | – | – | −0.55 |
per 1 mol of | −86.5 | – | – | −1.1 |
per 1 mol of | −43.3 | – | – | −0.55 |
Changes in aqueous solution
- Reaction of strontium iodide and sodium fluoride◆
ΔrG −47.8 kJ/mol K 2.37 × 108 pK −8.37
| 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 | −5.2 | −47.8 | 142.3 | – |
per 1 mol of | −5.2 | −47.8 | 142.3 | – |
per 1 mol of | −2.6 | −23.9 | 71.15 | – |
per 1 mol of | −5.2 | −47.8 | 142.3 | – |
per 1 mol of | −2.6 | −23.9 | 71.15 | – |
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 |
|---|---|---|---|---|
| SrI2 (cr) | -558.1[1] | – | – | 81.6[1] |
| SrI2 (g) | -272[1] | – | – | – |
| SrI2 (ai) | -656.18[1] | -662.62[1] | 190.0[1] | – |
| SrI2 (cr) 1 hydrate | -886.6[1] | – | – | 119.2[1] |
| SrI2 (cr) 2 hydrate | -1182.4[1] | – | – | 163.6[1] |
| SrI2 (cr) 6 hydrate | -2388.6[1] | – | – | 355.2[1] |
| NaF (cr) | -573.647[1] | -543.494[1] | 51.46[1] | 46.86[1] |
| NaF (g) | -291.2[1] | -310.5[1] | 217.59[1] | 34.221[1] |
| NaF (ai) | -572.75[1] | -540.68[1] | 45.2[1] | -60.2[1] |
* (cr):Crystalline solid, (g):Gas, (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 |
|---|---|---|---|---|
| SrF2 (cr) | -1216.3[1] | -1164.8[1] | 82.13[1] | 70.00[1] |
| SrF2 (g) | -764.4[1] | -775.3[1] | 291.06[1] | 52.97[1] |
| NaI (cr) | -287.78[1] | -286.06[1] | 98.53[1] | 52.09[1] |
| NaI (g) | -79.5[1] | -121.0[1] | 248.978[1] | 36.65[1] |
| NaI (ai) | -295.31[1] | -313.47[1] | 170.3[1] | -95.8[1] |
| NaI (cr) 1 hydrate | -883.096[1] | -771.10[1] | 196.2[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°, -558.1 kJ · mol−1
- ^ Cp°, 81.6 J · K−1 · mol−1
- ^ ΔfH°, -272. kJ · mol−1
- ^ ΔfH°, -656.18 kJ · mol−1
- ^ ΔfG°, -662.62 kJ · mol−1
- ^ S°, 190.0 J · K−1 · mol−1
- ^ ΔfH°, -886.6 kJ · mol−1
- ^ Cp°, 119.2 J · K−1 · mol−1
- ^ ΔfH°, -1182.4 kJ · mol−1
- ^ Cp°, 163.6 J · K−1 · mol−1
- ^ ΔfH°, -2388.6 kJ · mol−1
- ^ Cp°, 355.2 J · K−1 · mol−1
- ^ ΔfH°, -573.647 kJ · mol−1
- ^ ΔfG°, -543.494 kJ · mol−1
- ^ S°, 51.46 J · K−1 · mol−1
- ^ Cp°, 46.86 J · K−1 · mol−1
- ^ ΔfH°, -291.2 kJ · mol−1
- ^ ΔfG°, -310.5 kJ · mol−1
- ^ S°, 217.59 J · K−1 · mol−1
- ^ Cp°, 34.221 J · K−1 · mol−1
- ^ ΔfH°, -572.75 kJ · mol−1
- ^ ΔfG°, -540.68 kJ · mol−1
- ^ S°, 45.2 J · K−1 · mol−1
- ^ Cp°, -60.2 J · K−1 · mol−1
- ^ ΔfH°, -1216.3 kJ · mol−1
- ^ ΔfG°, -1164.8 kJ · mol−1
- ^ S°, 82.13 J · K−1 · mol−1
- ^ Cp°, 70.00 J · K−1 · mol−1
- ^ ΔfH°, -764.4 kJ · mol−1
- ^ ΔfG°, -775.3 kJ · mol−1
- ^ S°, 291.06 J · K−1 · mol−1
- ^ Cp°, 52.97 J · K−1 · mol−1
- ^ ΔfH°, -287.78 kJ · mol−1
- ^ ΔfG°, -286.06 kJ · mol−1
- ^ S°, 98.53 J · K−1 · mol−1
- ^ Cp°, 52.09 J · K−1 · mol−1
- ^ ΔfH°, -79.5 kJ · mol−1
- ^ ΔfG°, -121.0 kJ · mol−1
- ^ S°, 248.978 J · K−1 · mol−1
- ^ Cp°, 36.65 J · K−1 · mol−1
- ^ ΔfH°, -295.31 kJ · mol−1
- ^ ΔfG°, -313.47 kJ · mol−1
- ^ S°, 170.3 J · K−1 · mol−1
- ^ Cp°, -95.8 J · K−1 · mol−1
- ^ ΔfH°, -883.096 kJ · mol−1
- ^ ΔfG°, -771.10 kJ · mol−1
- ^ S°, 196.2 J · K−1 · mol−1