CaCrO4 + 2HF ๐งโ CaF2โ + CrO3 + H2O
Last updated:
- Reaction of calcium chromate and hydrogen fluoride
The reaction of calcium chromate and hydrogen fluoride yields calcium fluoride, chromium(VI) oxide, and water (Other reactions are here). This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of calcium chromate and hydrogen fluoride
General equation
- Precipitation reaction
- Miscible with water/Very soluble in water/Soluble in waterLewis acid + Miscible with water/Very soluble in water/Soluble in waterLewis base๐งโถ Insoluble in water/Very slightly soluble in water/Slightly soluble in waterLewis conjugate + Product(Non-redox product)
Oxidation state of each atom
- Reaction of calcium chromate and hydrogen fluoride
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CaCrO4 | Calcium chromate | 1 | Lewis acid | Soluble in water |
| HF | Hydrogen fluoride | 2 | Lewis base | Very soluble in water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CaF2 | Calcium fluoride | 1 | Lewis conjugate | Insoluble in water |
| CrO3 | Chromium(VI) oxide | 1 | Non-redox product | โ |
| H2O | Water | 1 | Non-redox product | โ |
Thermodynamic changes
Changes in aqueous solution (1)
- Reaction of calcium chromate and hydrogen fluoride
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | โ28.5 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
per 1 mol of | โ14.3 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
Changes in aqueous solution (2)
- Reaction of calcium chromate and hydrogen fluoride
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | โ3.4 | โ | โ | โ |
per 1 mol of | โ3.4 | โ | โ | โ |
per 1 mol of | โ1.7 | โ | โ | โ |
per 1 mol of | โ3.4 | โ | โ | โ |
per 1 mol of | โ3.4 | โ | โ | โ |
per 1 mol of | โ3.4 | โ | โ | โ |
Changes in aqueous solution (3)
- Reaction of calcium chromate and hydrogen fluoride
| Standard enthalpy of reaction ฮrHยฐ kJ ยท molโ1 | Standard Gibbs energy of reaction ฮrGยฐ kJ ยท molโ1 | Standard entropy of reaction ฮrSยฐ J ยท Kโ1 ยท molโ1 | Standard heat capacity of reaction at constant pressure ฮrCpยฐ J ยท Kโ1 ยท molโ1 | |
|---|---|---|---|---|
per 1 mol of Equation | โ28.5 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
per 1 mol of | โ14.3 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
per 1 mol of | โ28.5 | โ | โ | โ |
Thermodynamic data of reactants
| Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
|---|---|---|---|---|
| CaCrO4 (aq) | -1426.3[1] | โ | โ | โ |
| HF (l) x denotes undetermined zero point entropy | -299.78[1] | โ | 75.40+x[1] | โ |
| 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] | โ |
* (aq):Aqueous solution, (l):Liquid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution
Thermodynamic data of products
| Chemical formula | Standard enthalpy of formation ฮfHยฐ kJ ยท molโ1 | Standard Gibbs energy of formation ฮfGยฐ kJ ยท molโ1 | Standard molar entropy Sยฐ J ยท Kโ1 ยท molโ1 | Standard molar heat capacity at constant pressure Cpยฐ J ยท Kโ1 ยท molโ1 |
|---|---|---|---|---|
| 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] | โ |
| CrO3 (cr) | -589.5[1] | โ | โ | โ |
| CrO3 (g) | -385.8[1] | โ | โ | โ |
| H2O (cr) | โ | โ | โ | โ |
| 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] |
* (cr):Crystalline solid, (g):Gas, (ai):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)
- ^ ฮfHยฐ, -1426.3 kJ ยท molโ1
- ^ ฮfHยฐ, -299.78 kJ ยท molโ1
- ^ Sยฐ, 75.40+x J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -271.1 kJ ยท molโ1
- ^ ฮfGยฐ, -273.2 kJ ยท molโ1
- ^ Sยฐ, 173.779 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 29.133 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -332.63 kJ ยท molโ1
- ^ ฮfGยฐ, -278.79 kJ ยท molโ1
- ^ Sยฐ, -13.8 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -106.7 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -320.08 kJ ยท molโ1
- ^ ฮfGยฐ, -296.82 kJ ยท molโ1
- ^ Sยฐ, 88.7 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1219.6 kJ ยท molโ1
- ^ ฮfGยฐ, -1167.3 kJ ยท molโ1
- ^ Sยฐ, 68.87 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 67.03 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -781.6 kJ ยท molโ1
- ^ ฮfGยฐ, -790.4 kJ ยท molโ1
- ^ Sยฐ, 274.37 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 51.25 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1208.09 kJ ยท molโ1
- ^ ฮfGยฐ, -1111.15 kJ ยท molโ1
- ^ Sยฐ, -80.8 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -589.5 kJ ยท molโ1
- ^ ฮfHยฐ, -385.8 kJ ยท molโ1
- ^ ฮfHยฐ, -285.830 kJ ยท molโ1
- ^ ฮfGยฐ, -237.129 kJ ยท molโ1
- ^ Sยฐ, 69.91 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 75.291 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -241.818 kJ ยท molโ1
- ^ ฮfGยฐ, -228.572 kJ ยท molโ1
- ^ Sยฐ, 188.825 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 33.577 J ยท Kโ1 ยท molโ1