7HCl + 2BaCrO4 + 4H+ 🔥→ HClO3 + 2CrCl3 + 2Ba2+ + 5H2O
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- Reaction of hydrogen chloride and barium chromate under acidic condition
- 7HClHydrogen chloride + 2BaCrO4Barium chromate + 4H+Hydrogen ionHClO3Chloric acid + 2CrCl3Chromium(III) chloride + 2Ba2+Barium ion + 5H2OWater🔥⟶
The reaction of hydrogen chloride, barium chromate, and hydrogen ion yields chloric acid, chromium(III) chloride, barium 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 barium chromate under acidic condition
- 7HClHydrogen chloride + 2BaCrO4Barium chromate + 4H+Hydrogen ionHClO3Chloric acid + 2CrCl3Chromium(III) chloride + 2Ba2+Barium ion + 5H2OWater🔥⟶
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 barium chromate under acidic condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| HCl | Hydrogen chloride | 7 | Reducing | Hardly oxidizable |
| BaCrO4 | Barium chromate | 2 | Oxidizing | Oxidizing under acidic condition |
| H+ | Hydrogen ion | 4 | – | Hydrogen ion |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| HClO3 | Chloric acid | 1 | Oxidized | – |
| CrCl3 | Chromium(III) chloride | 2 | Reduced | – |
| Ba2+ | Barium ion | 2 | – | – |
| H2O | Water | 5 | – | Water |
Thermodynamic changes
Changes in standard condition
- Reaction of hydrogen chloride and barium chromate under acidic condition◆
ΔrG 321.7 kJ/mol K 0.44 × 10−56 pK 56.36
| 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 | 340.7 | 321.7 | 64.3 | – |
per 1 mol of | 48.67 | 45.96 | 9.19 | – |
per 1 mol of | 170.3 | 160.8 | 32.1 | – |
per 1 mol of Hydrogen ion | 85.17 | 80.42 | 16.1 | – |
per 1 mol of | 340.7 | 321.7 | 64.3 | – |
per 1 mol of | 170.3 | 160.8 | 32.1 | – |
per 1 mol of Barium ion | 170.3 | 160.8 | 32.1 | – |
per 1 mol of | 68.14 | 64.34 | 12.9 | – |
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] |
| BaCrO4 (cr) | -1446.0[1] | -1345.22[1] | 158.6[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] |
| Ba2+ (g) | 1660.38[1] | – | – | – |
| Ba2+ (ao) | -537.64[1] | -560.77[1] | 9.6[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°, -1446.0 kJ · mol−1
- ^ ΔfG°, -1345.22 kJ · mol−1
- ^ S°, 158.6 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°, 1660.38 kJ · mol−1
- ^ ΔfH°, -537.64 kJ · mol−1
- ^ ΔfG°, -560.77 kJ · mol−1
- ^ S°, 9.6 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