2Na + MgCl2 → 2NaCl + Mg
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- Reaction of and magnesium chloride
The reaction of and magnesium chloride yields sodium chloride and . This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of and magnesium chloride
General equation
- Reaction of reducing species and hardly reducible species
- Reducing speciesReducing agent + Hardly reducible speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of and magnesium chloride
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| 2 | Reducing | Reducing | ||
| MgCl2 | Magnesium chloride | 1 | Oxidizing | Hardly reducible |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaCl | Sodium chloride | 2 | Oxidized | – |
| 1 | Reduced | – |
Thermodynamic changes
Changes in standard condition
- Reaction of and magnesium chloride◆
ΔrG −176.49 kJ/mol K 8.31 × 1030 pK −30.92
| 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 | −180.99 | −176.49 | −15.10 | −1.97 |
| −90.495 | −88.245 | −7.550 | −0.985 | |
per 1 mol of | −180.99 | −176.49 | −15.10 | −1.97 |
per 1 mol of | −90.495 | −88.245 | −7.550 | −0.985 |
| −180.99 | −176.49 | −15.10 | −1.97 |
Changes in aqueous solution
- Reaction of and magnesium chloride◆
ΔrG −69.2 kJ/mol K 1.33 × 1012 pK −12.12
| 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 | −13.39 | −69.2 | 186.4 | – |
| −6.695 | −34.6 | 93.20 | – | |
per 1 mol of | −13.39 | −69.2 | 186.4 | – |
per 1 mol of | −6.695 | −34.6 | 93.20 | – |
| −13.39 | −69.2 | 186.4 | – |
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 |
|---|---|---|---|---|
| (cr) | 0[1] | 0[1] | 51.21[1] | 28.24[1] |
| (g) | 107.32[1] | 76.761[1] | 153.712[1] | 20.786[1] |
| MgCl2 (cr) | -641.32[1] | -591.79[1] | 89.62[1] | 71.38[1] |
| MgCl2 (g) | -400.4[1] | – | – | – |
| MgCl2 (ai) | -801.15[1] | -717.1[1] | -25.1[1] | – |
| MgCl2 (cr) 1 hydrate | -966.63[1] | -861.74[1] | 137.2[1] | 115.27[1] |
| MgCl2 (cr) 2 hydrate | -1279.72[1] | -1118.00[1] | 179.9[1] | 159.20[1] |
| MgCl2 (cr) 4 hydrate | -1898.99[1] | -1623.29[1] | 264.0[1] | 241.42[1] |
| MgCl2 (cr) 6 hydrate | -2499.02[1] | -2114.64[1] | 366.1[1] | 315.06[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 |
|---|---|---|---|---|
| NaCl (cr) | -411.153[1] | -384.138[1] | 72.13[1] | 50.50[1] |
| NaCl (g) | -176.65[1] | -196.66[1] | 229.81[1] | 35.77[1] |
| NaCl (ai) | -407.27[1] | -393.133[1] | 115.5[1] | -90.0[1] |
| (cr) | 0[1] | 0[1] | 32.68[1] | 24.89[1] |
| (g) | 147.70[1] | 113.10[1] | 148.650[1] | 20.786[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°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 51.21 J · K−1 · mol−1
- ^ Cp°, 28.24 J · K−1 · mol−1
- ^ ΔfH°, 107.32 kJ · mol−1
- ^ ΔfG°, 76.761 kJ · mol−1
- ^ S°, 153.712 J · K−1 · mol−1
- ^ Cp°, 20.786 J · K−1 · mol−1
- ^ ΔfH°, -641.32 kJ · mol−1
- ^ ΔfG°, -591.79 kJ · mol−1
- ^ S°, 89.62 J · K−1 · mol−1
- ^ Cp°, 71.38 J · K−1 · mol−1
- ^ ΔfH°, -400.4 kJ · mol−1
- ^ ΔfH°, -801.15 kJ · mol−1
- ^ ΔfG°, -717.1 kJ · mol−1
- ^ S°, -25.1 J · K−1 · mol−1
- ^ ΔfH°, -966.63 kJ · mol−1
- ^ ΔfG°, -861.74 kJ · mol−1
- ^ S°, 137.2 J · K−1 · mol−1
- ^ Cp°, 115.27 J · K−1 · mol−1
- ^ ΔfH°, -1279.72 kJ · mol−1
- ^ ΔfG°, -1118.00 kJ · mol−1
- ^ S°, 179.9 J · K−1 · mol−1
- ^ Cp°, 159.20 J · K−1 · mol−1
- ^ ΔfH°, -1898.99 kJ · mol−1
- ^ ΔfG°, -1623.29 kJ · mol−1
- ^ S°, 264.0 J · K−1 · mol−1
- ^ Cp°, 241.42 J · K−1 · mol−1
- ^ ΔfH°, -2499.02 kJ · mol−1
- ^ ΔfG°, -2114.64 kJ · mol−1
- ^ S°, 366.1 J · K−1 · mol−1
- ^ Cp°, 315.06 J · K−1 · mol−1
- ^ ΔfH°, -411.153 kJ · mol−1
- ^ ΔfG°, -384.138 kJ · mol−1
- ^ S°, 72.13 J · K−1 · mol−1
- ^ Cp°, 50.50 J · K−1 · mol−1
- ^ ΔfH°, -176.65 kJ · mol−1
- ^ ΔfG°, -196.66 kJ · mol−1
- ^ S°, 229.81 J · K−1 · mol−1
- ^ Cp°, 35.77 J · K−1 · mol−1
- ^ ΔfH°, -407.27 kJ · mol−1
- ^ ΔfG°, -393.133 kJ · mol−1
- ^ S°, 115.5 J · K−1 · mol−1
- ^ Cp°, -90.0 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 32.68 J · K−1 · mol−1
- ^ Cp°, 24.89 J · K−1 · mol−1
- ^ ΔfH°, 147.70 kJ · mol−1
- ^ ΔfG°, 113.10 kJ · mol−1
- ^ S°, 148.650 J · K−1 · mol−1
- ^ Cp°, 20.786 J · K−1 · mol−1