2Ca(ClO)2 + 2KOH → CaCl2 + Ca(OH)2 + 2KClO2
Last updated:
The reaction of calcium hypochlorite and potassium hydroxide yields calcium chloride, calcium hydroxide, and potassium chlorite (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 potassium hydroxide
General equation
- Reaction of self redoxing species and base
- Self-redoxing speciesSelf redox agent + BaseNon-redox agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of calcium hypochlorite and potassium hydroxide
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
Ca(ClO)2 | Calcium hypochlorite | 2 | – | Self redoxing |
KOH | Potassium hydroxide | 2 | – | Base |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
CaCl2 | Calcium chloride | 1 | Reduced | – |
Ca(OH)2 | Calcium hydroxide | 1 | – | – |
KClO2 | Potassium chlorite | 2 | Oxidized | – |
Thermodynamic changes
Changes in aqueous solution
- Reaction of calcium hypochlorite and potassium hydroxide
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 | −27.3 | – | – | – |
per 1 mol of | −13.7 | – | – | – |
per 1 mol of | −13.7 | – | – | – |
per 1 mol of | −27.3 | – | – | – |
per 1 mol of | −27.3 | – | – | – |
per 1 mol of | −13.7 | – | – | – |
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] | – | – | – |
KOH (cr) | -424.764[1] | -379.08[1] | 78.9[1] | 64.9[1] |
KOH (g) | -231.0[1] | -232.6[1] | 238.3[1] | 49.20[1] |
KOH (ai) | -482.37[1] | -440.50[1] | 91.6[1] | -126.8[1] |
KOH (cr) 1 hydrate | -748.9[1] | -645.1[1] | 117.2[1] | – |
KOH (cr) 2 hydrate | -1051.0[1] | -887.3[1] | 150.6[1] | – |
* (aq):Aqueous solution, (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 |
---|---|---|---|---|
CaCl2 (cr) | -795.8[1] | -748.1[1] | 104.6[1] | 72.59[1] |
CaCl2 (g) | -471.5[1] | -479.24[1] | 290.27[1] | 59.33[1] |
CaCl2 (ai) | -877.13[1] | -816.01[1] | 59.8[1] | – |
CaCl2 (cr) 1 hydrate | -1109.2[1] | – | – | – |
CaCl2 (cr) 2 hydrate | -1402.9[1] | – | – | – |
CaCl2 (cr) 4 hydrate | -2009.6[1] | – | – | – |
CaCl2 (cr) 6 hydrate | -2607.9[1] | – | – | – |
Ca(OH)2 (cr) | -986.09[1] | -898.49[1] | 83.39[1] | 87.49[1] |
Ca(OH)2 (g) | -544[1] | – | – | – |
Ca(OH)2 (ai) | -1002.82[1] | -868.07[1] | -74.5[1] | – |
Ca(OH)2 (cr) 2 hydrate | -1218.4[1] | – | – | – |
KClO2 (ai) | -318.8[1] | -266.1[1] | 203.8[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°, -754.4 kJ · mol−1
- ^ ΔfH°, -424.764 kJ · mol−1
- ^ ΔfG°, -379.08 kJ · mol−1
- ^ S°, 78.9 J · K−1 · mol−1
- ^ Cp°, 64.9 J · K−1 · mol−1
- ^ ΔfH°, -231.0 kJ · mol−1
- ^ ΔfG°, -232.6 kJ · mol−1
- ^ S°, 238.3 J · K−1 · mol−1
- ^ Cp°, 49.20 J · K−1 · mol−1
- ^ ΔfH°, -482.37 kJ · mol−1
- ^ ΔfG°, -440.50 kJ · mol−1
- ^ S°, 91.6 J · K−1 · mol−1
- ^ Cp°, -126.8 J · K−1 · mol−1
- ^ ΔfH°, -748.9 kJ · mol−1
- ^ ΔfG°, -645.1 kJ · mol−1
- ^ S°, 117.2 J · K−1 · mol−1
- ^ ΔfH°, -1051.0 kJ · mol−1
- ^ ΔfG°, -887.3 kJ · mol−1
- ^ S°, 150.6 J · K−1 · mol−1
- ^ ΔfH°, -795.8 kJ · mol−1
- ^ ΔfG°, -748.1 kJ · mol−1
- ^ S°, 104.6 J · K−1 · mol−1
- ^ Cp°, 72.59 J · K−1 · mol−1
- ^ ΔfH°, -471.5 kJ · mol−1
- ^ ΔfG°, -479.24 kJ · mol−1
- ^ S°, 290.27 J · K−1 · mol−1
- ^ Cp°, 59.33 J · K−1 · mol−1
- ^ ΔfH°, -877.13 kJ · mol−1
- ^ ΔfG°, -816.01 kJ · mol−1
- ^ S°, 59.8 J · K−1 · mol−1
- ^ ΔfH°, -1109.2 kJ · mol−1
- ^ ΔfH°, -1402.9 kJ · mol−1
- ^ ΔfH°, -2009.6 kJ · mol−1
- ^ ΔfH°, -2607.9 kJ · mol−1
- ^ ΔfH°, -986.09 kJ · mol−1
- ^ ΔfG°, -898.49 kJ · mol−1
- ^ S°, 83.39 J · K−1 · mol−1
- ^ Cp°, 87.49 J · K−1 · mol−1
- ^ ΔfH°, -544. kJ · mol−1
- ^ ΔfH°, -1002.82 kJ · mol−1
- ^ ΔfG°, -868.07 kJ · mol−1
- ^ S°, -74.5 J · K−1 · mol−1
- ^ ΔfH°, -1218.4 kJ · mol−1
- ^ ΔfH°, -318.8 kJ · mol−1
- ^ ΔfG°, -266.1 kJ · mol−1
- ^ S°, 203.8 J · K−1 · mol−1