Mg(NO3)2 + 2NH4F 💧→ MgF2↓ + 2NH4NO3
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The reaction of magnesium nitrate and ammonium fluoride yields magnesium fluoride and ammonium nitrate. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of magnesium nitrate and ammonium 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 magnesium nitrate and ammonium fluoride
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Mg(NO3)2 | Magnesium nitrate | 1 | Lewis acid | Very soluble in water |
| NH4F | Ammonium fluoride | 2 | Lewis base | Very soluble in water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| MgF2 | Magnesium fluoride | 1 | Lewis conjugate | Insoluble in water |
| NH4NO3 | Ammonium nitrate | 2 | Non-redox product | – |
Thermodynamic changes
Changes in standard condition
- Reaction of magnesium nitrate and ammonium fluoride◆
ΔrG −151.2 kJ/mol K 3.08 × 1026 pK −26.49
| 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 | −136.0 | −151.2 | 51.5 | 67.7 |
per 1 mol of | −136.0 | −151.2 | 51.5 | 67.7 |
per 1 mol of | −68.00 | −75.60 | 25.8 | 33.9 |
per 1 mol of | −136.0 | −151.2 | 51.5 | 67.7 |
per 1 mol of | −68.00 | −75.60 | 25.8 | 33.9 |
Changes in aqueous solution
- Reaction of magnesium nitrate and ammonium fluoride◆
ΔrG −57.8 kJ/mol K 1.34 × 1010 pK −10.13
| 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 | 8.7 | −57.8 | 222.8 | – |
per 1 mol of | 8.7 | −57.8 | 222.8 | – |
per 1 mol of | 4.3 | −28.9 | 111.4 | – |
per 1 mol of | 8.7 | −57.8 | 222.8 | – |
per 1 mol of | 4.3 | −28.9 | 111.4 | – |
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 |
|---|---|---|---|---|
| Mg(NO3)2 (cr) | -790.65[1] | -589.4[1] | 164.0[1] | 141.92[1] |
| Mg(NO3)2 (ai) | -881.57[1] | -677.3[1] | 154.8[1] | – |
| Mg(NO3)2 (cr) 2 hydrate | -1409.2[1] | – | – | – |
| Mg(NO3)2 (cr) 6 hydrate | -2613.28[1] | -2080.3[1] | 452[1] | – |
| NH4F (cr) | -463.96[1] | -348.68[1] | 71.96[1] | 65.27[1] |
| NH4F (ai) | -465.14[1] | -358.09[1] | 99.6[1] | -26.8[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 |
|---|---|---|---|---|
| MgF2 (cr) | -1123.4[1] | -1070.2[1] | 57.24[1] | 61.59[1] |
| MgF2 (g) | -723.8[1] | -730.5[1] | 258.39[1] | 48.62[1] |
| NH4NO3 (cr) | -365.56[1] | -183.87[1] | 151.08[1] | 139.3[1] |
| NH4NO3 (ai) | -339.87[1] | -190.56[1] | 259.8[1] | -6.7[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°, -790.65 kJ · mol−1
- ^ ΔfG°, -589.4 kJ · mol−1
- ^ S°, 164.0 J · K−1 · mol−1
- ^ Cp°, 141.92 J · K−1 · mol−1
- ^ ΔfH°, -881.57 kJ · mol−1
- ^ ΔfG°, -677.3 kJ · mol−1
- ^ S°, 154.8 J · K−1 · mol−1
- ^ ΔfH°, -1409.2 kJ · mol−1
- ^ ΔfH°, -2613.28 kJ · mol−1
- ^ ΔfG°, -2080.3 kJ · mol−1
- ^ S°, 452. J · K−1 · mol−1
- ^ ΔfH°, -463.96 kJ · mol−1
- ^ ΔfG°, -348.68 kJ · mol−1
- ^ S°, 71.96 J · K−1 · mol−1
- ^ Cp°, 65.27 J · K−1 · mol−1
- ^ ΔfH°, -465.14 kJ · mol−1
- ^ ΔfG°, -358.09 kJ · mol−1
- ^ S°, 99.6 J · K−1 · mol−1
- ^ Cp°, -26.8 J · K−1 · mol−1
- ^ ΔfH°, -1123.4 kJ · mol−1
- ^ ΔfG°, -1070.2 kJ · mol−1
- ^ S°, 57.24 J · K−1 · mol−1
- ^ Cp°, 61.59 J · K−1 · mol−1
- ^ ΔfH°, -723.8 kJ · mol−1
- ^ ΔfG°, -730.5 kJ · mol−1
- ^ S°, 258.39 J · K−1 · mol−1
- ^ Cp°, 48.62 J · K−1 · mol−1
- ^ ΔfH°, -365.56 kJ · mol−1
- ^ ΔfG°, -183.87 kJ · mol−1
- ^ S°, 151.08 J · K−1 · mol−1
- ^ Cp°, 139.3 J · K−1 · mol−1
- ^ ΔfH°, -339.87 kJ · mol−1
- ^ ΔfG°, -190.56 kJ · mol−1
- ^ S°, 259.8 J · K−1 · mol−1
- ^ Cp°, -6.7 J · K−1 · mol−1