Ca(ClO)2 + 2HBr → CaBr2 + 2HCl + O2
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The reaction of calcium hypochlorite and hydrogen bromide yields calcium bromide, hydrogen chloride, and (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 calcium hypochlorite and hydrogen bromide
General equation
- Reaction of self redoxing species and acid
- Self-redoxing speciesSelf redox agent + AcidNon-redox agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of calcium hypochlorite and hydrogen bromide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ca(ClO)2 | Calcium hypochlorite | 1 | Self redox agent | Self redoxing |
| HBr | Hydrogen bromide | 2 | – | Acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CaBr2 | Calcium bromide | 1 | – | – |
| HCl | Hydrogen chloride | 2 | Reduced | – |
| 1 | Oxidized | – |
Thermodynamic changes
Changes in aqueous solution (1)
- Reaction of calcium hypochlorite and hydrogen bromide
| 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 | 27.0 | – | – | – |
per 1 mol of | 27.0 | – | – | – |
per 1 mol of | 13.5 | – | – | – |
per 1 mol of | 27.0 | – | – | – |
per 1 mol of | 13.5 | – | – | – |
| 27.0 | – | – | – |
Changes in aqueous solution (2)
- Reaction of calcium hypochlorite and hydrogen bromide
| 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 | 15.3 | – | – | – |
per 1 mol of | 15.3 | – | – | – |
per 1 mol of | 7.65 | – | – | – |
per 1 mol of | 15.3 | – | – | – |
per 1 mol of | 7.65 | – | – | – |
| 15.3 | – | – | – |
Changes in aqueous solution (3)
- Reaction of calcium hypochlorite and hydrogen bromide
| 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 | −122.7 | – | – | – |
per 1 mol of | −122.7 | – | – | – |
per 1 mol of | −61.35 | – | – | – |
per 1 mol of | −122.7 | – | – | – |
per 1 mol of | −61.35 | – | – | – |
| −122.7 | – | – | – |
Changes in aqueous solution (4)
- Reaction of calcium hypochlorite and hydrogen bromide
| 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 | −134.4 | – | – | – |
per 1 mol of | −134.4 | – | – | – |
per 1 mol of | −67.20 | – | – | – |
per 1 mol of | −134.4 | – | – | – |
per 1 mol of | −67.20 | – | – | – |
| −134.4 | – | – | – |
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 |
|---|---|---|---|---|
| Ca(ClO)2 (aq) | -754.4[1] | – | – | – |
| HBr (g) | -36.40[1] | -53.45[1] | 198.695[1] | 29.142[1] |
| HBr (ai) | -121.55[1] | -103.96[1] | 82.4[1] | -141.8[1] |
* (aq):Aqueous solution, (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 |
|---|---|---|---|---|
| CaBr2 (cr) | -682.8[1] | -663.6[1] | 130[1] | – |
| CaBr2 (g) | -398.3[1] | – | – | – |
| CaBr2 (ai) | -785.92[1] | -761.49[1] | 111.7[1] | – |
| CaBr2 (cr) 6 hydrate | -2506.2[1] | -2152.8[1] | 410[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] |
| (g) | 0[1] | 0[1] | 205.138[1] | 29.355[1] |
| (ao) | -11.7[1] | 16.4[1] | 110.9[1] | – |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-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°, -754.4 kJ · mol−1
- ^ ΔfH°, -36.40 kJ · mol−1
- ^ ΔfG°, -53.45 kJ · mol−1
- ^ S°, 198.695 J · K−1 · mol−1
- ^ Cp°, 29.142 J · K−1 · mol−1
- ^ ΔfH°, -121.55 kJ · mol−1
- ^ ΔfG°, -103.96 kJ · mol−1
- ^ S°, 82.4 J · K−1 · mol−1
- ^ Cp°, -141.8 J · K−1 · mol−1
- ^ ΔfH°, -682.8 kJ · mol−1
- ^ ΔfG°, -663.6 kJ · mol−1
- ^ S°, 130. J · K−1 · mol−1
- ^ ΔfH°, -398.3 kJ · mol−1
- ^ ΔfH°, -785.92 kJ · mol−1
- ^ ΔfG°, -761.49 kJ · mol−1
- ^ S°, 111.7 J · K−1 · mol−1
- ^ ΔfH°, -2506.2 kJ · mol−1
- ^ ΔfG°, -2152.8 kJ · mol−1
- ^ S°, 410. J · K−1 · mol−1
- ^ 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°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 205.138 J · K−1 · mol−1
- ^ Cp°, 29.355 J · K−1 · mol−1
- ^ ΔfH°, -11.7 kJ · mol−1
- ^ ΔfG°, 16.4 kJ · mol−1
- ^ S°, 110.9 J · K−1 · mol−1