3NH4F + 39Fe2O3 ๐ฅโ Fe(NO3)3 + 24Fe3O4 + FeF3 + 4Fe(OH)3
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The reaction of ammonium fluoride and iron(III) oxide yields iron(III) nitrate, iron(II,III) oxide, iron(III) fluoride, and iron(III) hydroxide (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 ammonium fluoride and iron(III) oxide
General equation
- Reaction of reducing species and reducible species
- Reducing speciesReducing agent + Reducible speciesOxidizing agent โถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of ammonium fluoride and iron(III) oxide
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NH4F | Ammonium fluoride | 3 | Reducing | Reducing |
| Fe2O3 | Iron(III) oxide | 39 | Oxidizing | Reducible |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Fe(NO3)3 | Iron(III) nitrate | 1 | Oxidized | โ |
| Fe3O4 | Iron(II,III) oxide | 24 | Reduced | โ |
| FeF3 | Iron(III) fluoride | 1 | โ | โ |
| Fe(OH)3 | Iron(III) hydroxide | 4 | โ | โ |
Thermodynamic changes
Changes in aqueous solution (1)
- Reaction of ammonium fluoride and iron(III) oxide
| 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 | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
Changes in aqueous solution (2)
- Reaction of ammonium fluoride and iron(III) oxideโ
ฮrG 1834.1 kJ/mol K 0.48 ร 10โ321 pK 321.32
| 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 | โ | 1834.1 | โ | โ |
per 1 mol of | โ | 611.37 | โ | โ |
per 1 mol of | โ | 47.028 | โ | โ |
per 1 mol of | โ | 1834.1 | โ | โ |
per 1 mol of | โ | 76.421 | โ | โ |
per 1 mol of | โ | 1834.1 | โ | โ |
per 1 mol of | โ | 458.52 | โ | โ |
Changes in aqueous solution (3)
- Reaction of ammonium fluoride and iron(III) oxide
| 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 | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
Changes in aqueous solution (4)
- Reaction of ammonium fluoride and iron(III) oxide
| 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 | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | โ | โ | โ |
per 1 mol of | โ | 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 |
|---|---|---|---|---|
| NH4F (cr) | -463.96[1] | -348.68[1] | 71.96[1] | 65.27[1] |
| NH4F (ai) | -465.14[1] | -358.09[1] | 99.6[1] | -26.8[1] |
| Fe2O3 (cr) | -824.2[1] | -742.2[1] | 87.40[1] | 103.85[1] |
* (cr):Crystalline solid, (ai):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 |
|---|---|---|---|---|
| Fe(NO3)3 (ai) | -670.7[1] | -338.3[1] | 123.4[1] | โ |
| Fe(NO3)3 (aq) | -674.9[1] | โ | โ | โ |
| Fe(NO3)3 (cr) 9 hydrate | -3285.3[1] | โ | โ | โ |
| Fe3O4 (cr) | -1118.4[1] | -1015.4[1] | 146.4[1] | 143.43[1] |
| FeF3 (ai) | -1046.4[1] | -840.9[1] | -357.3[1] | โ |
| FeF3 (aq) | -1016.3[1] | โ | โ | โ |
| Fe(OH)3 (cr) precipitated | -823.0[1] | -696.5[1] | 106.7[1] | โ |
| Fe(OH)3 (ao) | โ | -659.3[1] | โ | โ |
* (ai):Ionized aqueous solution, (aq):Aqueous solution, (cr):Crystalline solid, (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)
- ^ ฮfHยฐ, -463.96 kJ ยท molโ1
- ^ ฮfGยฐ, -348.68 kJ ยท molโ1
- ^ Sยฐ, 71.96 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 65.27 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -465.14 kJ ยท molโ1
- ^ ฮfGยฐ, -358.09 kJ ยท molโ1
- ^ Sยฐ, 99.6 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -26.8 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -824.2 kJ ยท molโ1
- ^ ฮfGยฐ, -742.2 kJ ยท molโ1
- ^ Sยฐ, 87.40 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 103.85 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -670.7 kJ ยท molโ1
- ^ ฮfGยฐ, -338.3 kJ ยท molโ1
- ^ Sยฐ, 123.4 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -674.9 kJ ยท molโ1
- ^ ฮfHยฐ, -3285.3 kJ ยท molโ1
- ^ ฮfHยฐ, -1118.4 kJ ยท molโ1
- ^ ฮfGยฐ, -1015.4 kJ ยท molโ1
- ^ Sยฐ, 146.4 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 143.43 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1046.4 kJ ยท molโ1
- ^ ฮfGยฐ, -840.9 kJ ยท molโ1
- ^ Sยฐ, -357.3 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1016.3 kJ ยท molโ1
- ^ ฮfHยฐ, -823.0 kJ ยท molโ1
- ^ ฮfGยฐ, -696.5 kJ ยท molโ1
- ^ Sยฐ, 106.7 J ยท Kโ1 ยท molโ1
- ^ ฮfGยฐ, -659.3 kJ ยท molโ1