10NaCl + 2SrCrO4 + 16H+ → 10Na+ + 3Cl2↑ + 2Cr3+ + 2SrCl2 + 8H2O
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- Reaction of sodium chloride and strontium chromate under acidic condition
- 10NaClSodium chloride + 2SrCrO4Strontium chromate + 16H+Hydrogen ion10Na+Sodium ion + 3↑ + 2Cr3+Chromium(III) ion + 2SrCl2Strontium chloride + 8H2OWater⟶
The reaction of sodium chloride, strontium chromate, and hydrogen ion yields sodium ion, , chromium(III) ion, strontium chloride, and water (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of sodium chloride and strontium chromate under acidic condition
- 10NaClSodium chloride + 2SrCrO4Strontium chromate + 16H+Hydrogen ion10Na+Sodium ion + 3↑ + 2Cr3+Chromium(III) ion + 2SrCl2Strontium chloride + 8H2OWater⟶
General equation
- Reaction of hardly oxidizable species and oxidizing species under acidic condition
- Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent ⟶ ProductOxidation product + ProductReduction product + H2ONon-redox product
Oxidation state of each atom
- Reaction of sodium chloride and strontium chromate under acidic condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaCl | Sodium chloride | 10 | Reducing | Hardly oxidizable |
| SrCrO4 | Strontium chromate | 2 | Oxidizing | Oxidizing under acidic condition |
| H+ | Hydrogen ion | 16 | – | Hydrogen ion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na+ | Sodium ion | 10 | – | – |
| 3 | Oxidized | – | ||
| Cr3+ | Chromium(III) ion | 2 | Reduced | – |
| SrCl2 | Strontium chloride | 2 | – | – |
| H2O | Water | 8 | – | Water |
Thermodynamic changes
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 |
|---|---|---|---|---|
| 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] |
| SrCrO4 | – | – | – | – |
| H+ (g) | 1536.202[1] | – | – | – |
| H+ (ao) | 0[1] | 0[1] | 0[1] | 0[1] |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (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 |
|---|---|---|---|---|
| Na+ (g) | 609.358[1] | – | – | – |
| Na+ (ao) | -240.12[1] | -261.905[1] | 59.0[1] | 46.4[1] |
| (g) | 0[1] | 0[1] | 223.066[1] | 33.907[1] |
| (ao) | -23.4[1] | 6.94[1] | 121[1] | – |
| Cr3+ (g) | 5648.4[1] | – | – | – |
| SrCl2 (cr) α | -828.9[1] | -781.1[1] | 114.85[1] | 75.60[1] |
| SrCl2 (g) | -485.8[1] | -496.2[1] | 310.81[1] | 55.77[1] |
| SrCl2 (ai) | -880.10[1] | -821.91[1] | 80.3[1] | – |
| SrCl2 (cr) 1 hydrate | -1136.8[1] | -1036.3[1] | 172[1] | 120.1[1] |
| SrCl2 (cr) 2 hydrate | -1438.0[1] | -1281.8[1] | 218[1] | 160.2[1] |
| SrCl2 (cr) 6 hydrate | -2623.8[1] | -2240.92[1] | 390.8[1] | – |
| H2O (cr) | – | – | – | – |
| H2O (l) | -285.830[1] | -237.129[1] | 69.91[1] | 75.291[1] |
| H2O (g) | -241.818[1] | -228.572[1] | 188.825[1] | 33.577[1] |
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid
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°, -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°, 1536.202 kJ · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 0 J · K−1 · mol−1
- ^ Cp°, 0 J · K−1 · mol−1
- ^ ΔfH°, 609.358 kJ · mol−1
- ^ ΔfH°, -240.12 kJ · mol−1
- ^ ΔfG°, -261.905 kJ · mol−1
- ^ S°, 59.0 J · K−1 · mol−1
- ^ Cp°, 46.4 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 223.066 J · K−1 · mol−1
- ^ Cp°, 33.907 J · K−1 · mol−1
- ^ ΔfH°, -23.4 kJ · mol−1
- ^ ΔfG°, 6.94 kJ · mol−1
- ^ S°, 121. J · K−1 · mol−1
- ^ ΔfH°, 5648.4 kJ · mol−1
- ^ ΔfH°, -828.9 kJ · mol−1
- ^ ΔfG°, -781.1 kJ · mol−1
- ^ S°, 114.85 J · K−1 · mol−1
- ^ Cp°, 75.60 J · K−1 · mol−1
- ^ ΔfH°, -485.8 kJ · mol−1
- ^ ΔfG°, -496.2 kJ · mol−1
- ^ S°, 310.81 J · K−1 · mol−1
- ^ Cp°, 55.77 J · K−1 · mol−1
- ^ ΔfH°, -880.10 kJ · mol−1
- ^ ΔfG°, -821.91 kJ · mol−1
- ^ S°, 80.3 J · K−1 · mol−1
- ^ ΔfH°, -1136.8 kJ · mol−1
- ^ ΔfG°, -1036.3 kJ · mol−1
- ^ S°, 172. J · K−1 · mol−1
- ^ Cp°, 120.1 J · K−1 · mol−1
- ^ ΔfH°, -1438.0 kJ · mol−1
- ^ ΔfG°, -1281.8 kJ · mol−1
- ^ S°, 218. J · K−1 · mol−1
- ^ Cp°, 160.2 J · K−1 · mol−1
- ^ ΔfH°, -2623.8 kJ · mol−1
- ^ ΔfG°, -2240.92 kJ · mol−1
- ^ S°, 390.8 J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1