6HCl + 6Ag2CrO4 + 27H+ → 3HClO3 + CrCl3 + 5Cr3+ + 12Ag+ + 15H2O
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- Reaction of hydrogen chloride and silver(I) chromate under acidic condition
- 6HClHydrogen chloride + 6Ag2CrO4Silver(I) chromate + 27H+Hydrogen ion3HClO3Chloric acid + CrCl3Chromium(III) chloride + 5Cr3+Chromium(III) ion + 12Ag+Silver(I) ion + 15H2OWater⟶
The reaction of hydrogen chloride, silver(I) chromate, and hydrogen ion yields chloric acid, chromium(III) chloride, chromium(III) ion, silver(I) ion, 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 hydrogen chloride and silver(I) chromate under acidic condition
- 6HClHydrogen chloride + 6Ag2CrO4Silver(I) chromate + 27H+Hydrogen ion3HClO3Chloric acid + CrCl3Chromium(III) chloride + 5Cr3+Chromium(III) ion + 12Ag+Silver(I) ion + 15H2OWater⟶
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 hydrogen chloride and silver(I) chromate under acidic condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| HCl | Hydrogen chloride | 6 | Reducing | Hardly oxidizable |
| Ag2CrO4 | Silver(I) chromate | 6 | Oxidizing | Oxidizing under acidic condition |
| H+ | Hydrogen ion | 27 | – | Hydrogen ion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| HClO3 | Chloric acid | 3 | Oxidized | – |
| CrCl3 | Chromium(III) chloride | 1 | Reduced | – |
| Cr3+ | Chromium(III) ion | 5 | Reduced | – |
| Ag+ | Silver(I) ion | 12 | – | – |
| H2O | Water | 15 | – | 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 |
|---|---|---|---|---|
| HCl (g) | -92.307[1] | -95.299[1] | 186.908[1] | 29.12[1] |
| HCl (ai) | -167.159[1] | -131.228[1] | 56.5[1] | -136.4[1] |
| Ag2CrO4 (cr) | -731.74[1] | -641.76[1] | 217.6[1] | 142.26[1] |
| Ag2CrO4 (ai) | -669.98[1] | -573.52[1] | 195.8[1] | – |
| H+ (g) | 1536.202[1] | – | – | – |
| H+ (ao) | 0[1] | 0[1] | 0[1] | 0[1] |
* (g):Gas, (ai):Ionized aqueous solution, (cr):Crystalline solid, (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 |
|---|---|---|---|---|
| HClO3 (ai) | -103.97[1] | -7.95[1] | 162.3[1] | – |
| CrCl3 (cr) | -556.5[1] | -486.1[1] | 123.0[1] | 91.80[1] |
| Cr3+ (g) | 5648.4[1] | – | – | – |
| Ag+ (g) | 1021.73[1] | – | – | – |
| Ag+ (ao) | 105.579[1] | 77.107[1] | 72.68[1] | 21.8[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] |
* (ai):Ionized aqueous solution, (cr):Crystalline solid, (g):Gas, (ao):Un-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°, -92.307 kJ · mol−1
- ^ ΔfG°, -95.299 kJ · mol−1
- ^ S°, 186.908 J · K−1 · mol−1
- ^ Cp°, 29.12 J · K−1 · mol−1
- ^ ΔfH°, -167.159 kJ · mol−1
- ^ ΔfG°, -131.228 kJ · mol−1
- ^ S°, 56.5 J · K−1 · mol−1
- ^ Cp°, -136.4 J · K−1 · mol−1
- ^ ΔfH°, -731.74 kJ · mol−1
- ^ ΔfG°, -641.76 kJ · mol−1
- ^ S°, 217.6 J · K−1 · mol−1
- ^ Cp°, 142.26 J · K−1 · mol−1
- ^ ΔfH°, -669.98 kJ · mol−1
- ^ ΔfG°, -573.52 kJ · mol−1
- ^ S°, 195.8 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°, -103.97 kJ · mol−1
- ^ ΔfG°, -7.95 kJ · mol−1
- ^ S°, 162.3 J · K−1 · mol−1
- ^ ΔfH°, -556.5 kJ · mol−1
- ^ ΔfG°, -486.1 kJ · mol−1
- ^ S°, 123.0 J · K−1 · mol−1
- ^ Cp°, 91.80 J · K−1 · mol−1
- ^ ΔfH°, 5648.4 kJ · mol−1
- ^ ΔfH°, 1021.73 kJ · mol−1
- ^ ΔfH°, 105.579 kJ · mol−1
- ^ ΔfG°, 77.107 kJ · mol−1
- ^ S°, 72.68 J · K−1 · mol−1
- ^ Cp°, 21.8 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