CaF2 + 2HClO3 → Ca(ClO3)2 + 2HF↑
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The reaction of calcium fluoride and chloric acid yields calcium chlorate and hydrogen fluoride. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of calcium fluoride and chloric acid
General equation
- Salt of weak acidBrønsted base + Strong acidBrønsted acid ⟶ Salt of strong acidConjugate base + Weak acidConjugate acid
- Salt of volatile acidBrønsted base + Nonvolatile acidBrønsted acid ⟶ Salt of non volatile acidConjugate base + Volatile acidConjugate acid
Oxidation state of each atom
- Reaction of calcium fluoride and chloric acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CaF2 | Calcium fluoride | 1 | Brønsted base | Salt of weak acid Salt of volatile acid |
| HClO3 | Chloric acid | 2 | Brønsted acid | Strong acid Nonvolatile acid |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ca(ClO3)2 | Calcium chlorate | 1 | Conjugate base | Salt of strong acid Salt of non volatile acid |
| HF | Hydrogen fluoride | 2 | Conjugate acid | Weak acid Volatile acid |
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 |
|---|---|---|---|---|
| CaF2 (cr) | -1219.6[1] | -1167.3[1] | 68.87[1] | 67.03[1] |
| CaF2 (g) | -781.6[1] | -790.4[1] | 274.37[1] | 51.25[1] |
| CaF2 (ai) | -1208.09[1] | -1111.15[1] | -80.8[1] | – |
| HClO3 (ai) | -103.97[1] | -7.95[1] | 162.3[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 |
|---|---|---|---|---|
| Ca(ClO3)2 | – | – | – | – |
| HF (l) x denotes undetermined zero point entropy | -299.78[1] | – | 75.40+x[1] | – |
| HF (g) | -271.1[1] | -273.2[1] | 173.779[1] | 29.133[1] |
| HF (ai) | -332.63[1] | -278.79[1] | -13.8[1] | -106.7[1] |
| HF (ao) | -320.08[1] | -296.82[1] | 88.7[1] | – |
* (l):Liquid, (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°, -1219.6 kJ · mol−1
- ^ ΔfG°, -1167.3 kJ · mol−1
- ^ S°, 68.87 J · K−1 · mol−1
- ^ Cp°, 67.03 J · K−1 · mol−1
- ^ ΔfH°, -781.6 kJ · mol−1
- ^ ΔfG°, -790.4 kJ · mol−1
- ^ S°, 274.37 J · K−1 · mol−1
- ^ Cp°, 51.25 J · K−1 · mol−1
- ^ ΔfH°, -1208.09 kJ · mol−1
- ^ ΔfG°, -1111.15 kJ · mol−1
- ^ S°, -80.8 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°, -299.78 kJ · mol−1
- ^ S°, 75.40+x J · K−1 · mol−1
- ^ ΔfH°, -271.1 kJ · mol−1
- ^ ΔfG°, -273.2 kJ · mol−1
- ^ S°, 173.779 J · K−1 · mol−1
- ^ Cp°, 29.133 J · K−1 · mol−1
- ^ ΔfH°, -332.63 kJ · mol−1
- ^ ΔfG°, -278.79 kJ · mol−1
- ^ S°, -13.8 J · K−1 · mol−1
- ^ Cp°, -106.7 J · K−1 · mol−1
- ^ ΔfH°, -320.08 kJ · mol−1
- ^ ΔfG°, -296.82 kJ · mol−1
- ^ S°, 88.7 J · K−1 · mol−1