2KI + 3CsClO4 🔥→ 2KClO4 + I2 + CsClO3 + Cs2O
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The reaction of potassium iodide and caesium perchlorate yields potassium perchlorate, , caesium chlorate, and caesium oxide (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 potassium iodide and caesium perchlorate
General equation
- Reaction of oxidizable species and oxidizing species
- Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of potassium iodide and caesium perchlorate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| KI | Potassium iodide | 2 | Reducing | Oxidizable |
| CsClO4 | Caesium perchlorate | 3 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| KClO4 | Potassium perchlorate | 2 | – | – |
| 1 | Oxidized | – | ||
| CsClO3 | Caesium chlorate | 1 | Reduced | – |
| Cs2O | Caesium oxide | 1 | – | – |
Thermodynamic changes
Changes in standard condition
- Reaction of potassium iodide and caesium perchlorate◆
ΔrG 370.3 kJ/mol K 0.13 × 10−64 pK 64.87
| 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 | 362.1 | 370.3 | −16.7 | – |
per 1 mol of | 181.1 | 185.2 | −8.35 | – |
per 1 mol of | 120.7 | 123.4 | −5.57 | – |
per 1 mol of | 181.1 | 185.2 | −8.35 | – |
| 362.1 | 370.3 | −16.7 | – | |
per 1 mol of | 362.1 | 370.3 | −16.7 | – |
per 1 mol of | 362.1 | 370.3 | −16.7 | – |
Changes in aqueous solution
- Reaction of potassium iodide and caesium perchlorate◆
ΔrG 396.03 kJ/mol K 0.42 × 10−69 pK 69.38
| 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 | 329.1 | 396.03 | −224.4 | – |
per 1 mol of | 164.6 | 198.01 | −112.2 | – |
per 1 mol of | 109.7 | 132.01 | −74.80 | – |
per 1 mol of | 164.6 | 198.01 | −112.2 | – |
| 329.1 | 396.03 | −224.4 | – | |
per 1 mol of | 329.1 | 396.03 | −224.4 | – |
per 1 mol of | 329.1 | 396.03 | −224.4 | – |
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 |
|---|---|---|---|---|
| KI (cr) | -327.900[1] | -324.892[1] | 106.32[1] | 52.93[1] |
| KI (g) | -125.5[1] | -166.1[1] | 258.3[1] | 37.11[1] |
| KI (ai) | -307.57[1] | -334.85[1] | 213.8[1] | -120.5[1] |
| CsClO4 (cr) | -443.09[1] | -314.26[1] | 175.06[1] | 108.28[1] |
| CsClO4 (ai) | -387.61[1] | -300.54[1] | 315.1[1] | – |
* (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 |
|---|---|---|---|---|
| KClO4 (cr) | -432.75[1] | -303.09[1] | 151.0[1] | 112.38[1] |
| KClO4 (ai) | -381.71[1] | -291.79[1] | 284.5[1] | – |
| (cr) | 0[1] | 0[1] | 116.135[1] | 54.438[1] |
| (g) | 62.438[1] | 19.327[1] | 260.69[1] | 36.90[1] |
| (ao) | 22.6[1] | 16.40[1] | 137.2[1] | – |
| CsClO3 (cr) | -411.7[1] | -307.9[1] | 156.1[1] | – |
| CsClO3 (ai) | -362.25[1] | -299.97[1] | 295.4[1] | – |
| Cs2O (cr) | -345.77[1] | -308.14[1] | 146.86[1] | 75.98[1] |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (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°, -327.900 kJ · mol−1
- ^ ΔfG°, -324.892 kJ · mol−1
- ^ S°, 106.32 J · K−1 · mol−1
- ^ Cp°, 52.93 J · K−1 · mol−1
- ^ ΔfH°, -125.5 kJ · mol−1
- ^ ΔfG°, -166.1 kJ · mol−1
- ^ S°, 258.3 J · K−1 · mol−1
- ^ Cp°, 37.11 J · K−1 · mol−1
- ^ ΔfH°, -307.57 kJ · mol−1
- ^ ΔfG°, -334.85 kJ · mol−1
- ^ S°, 213.8 J · K−1 · mol−1
- ^ Cp°, -120.5 J · K−1 · mol−1
- ^ ΔfH°, -443.09 kJ · mol−1
- ^ ΔfG°, -314.26 kJ · mol−1
- ^ S°, 175.06 J · K−1 · mol−1
- ^ Cp°, 108.28 J · K−1 · mol−1
- ^ ΔfH°, -387.61 kJ · mol−1
- ^ ΔfG°, -300.54 kJ · mol−1
- ^ S°, 315.1 J · K−1 · mol−1
- ^ ΔfH°, -432.75 kJ · mol−1
- ^ ΔfG°, -303.09 kJ · mol−1
- ^ S°, 151.0 J · K−1 · mol−1
- ^ Cp°, 112.38 J · K−1 · mol−1
- ^ ΔfH°, -381.71 kJ · mol−1
- ^ ΔfG°, -291.79 kJ · mol−1
- ^ S°, 284.5 J · K−1 · mol−1
- ^ ΔfH°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 116.135 J · K−1 · mol−1
- ^ Cp°, 54.438 J · K−1 · mol−1
- ^ ΔfH°, 62.438 kJ · mol−1
- ^ ΔfG°, 19.327 kJ · mol−1
- ^ S°, 260.69 J · K−1 · mol−1
- ^ Cp°, 36.90 J · K−1 · mol−1
- ^ ΔfH°, 22.6 kJ · mol−1
- ^ ΔfG°, 16.40 kJ · mol−1
- ^ S°, 137.2 J · K−1 · mol−1
- ^ ΔfH°, -411.7 kJ · mol−1
- ^ ΔfG°, -307.9 kJ · mol−1
- ^ S°, 156.1 J · K−1 · mol−1
- ^ ΔfH°, -362.25 kJ · mol−1
- ^ ΔfG°, -299.97 kJ · mol−1
- ^ S°, 295.4 J · K−1 · mol−1
- ^ ΔfH°, -345.77 kJ · mol−1
- ^ ΔfG°, -308.14 kJ · mol−1
- ^ S°, 146.86 J · K−1 · mol−1
- ^ Cp°, 75.98 J · K−1 · mol−1