6Fe3O4 + 3Cl2 + 24H2O ๐ฅโ 2FeCl3 + 16Fe(OH)3
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- Reaction of iron(II,III) oxide and under neutral condition
- 6Fe3O4Iron(II,III) oxide + 3 + 24H2OWater2FeCl3Iron(III) chloride + 16Fe(OH)3Iron(III) hydroxide๐ฅโถ
The reaction of iron(II,III) oxide, , and water yields iron(III) chloride and iron(III) hydroxide. This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of iron(II,III) oxide and under neutral condition
- 6Fe3O4Iron(II,III) oxide + 3 + 24H2OWater2FeCl3Iron(III) chloride + 16Fe(OH)3Iron(III) hydroxide๐ฅโถ
General equation
- Reaction of oxidizable species and oxidizing species under neutral condition
- Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H2ONon-redox agent โถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of iron(II,III) oxide and under neutral condition
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Fe3O4 | Iron(II,III) oxide | 6 | Reducing | Oxidizable |
| 3 | Oxidizing | Oxidizing | ||
| H2O | Water | 24 | โ | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| FeCl3 | Iron(III) chloride | 2 | Reduced | โ |
| Fe(OH)3 | Iron(III) hydroxide | 16 | Oxidized | โ |
Thermodynamic changes
Changes in standard condition
- Reaction of iron(II,III) oxide and under neutral conditionโ
ฮrG โ28.5 kJ/mol K 9.84 ร 104 pK โ4.99
| 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 | โ396.7 | โ28.5 | โ1233.6 | โ |
per 1 mol of | โ66.12 | โ4.75 | โ205.60 | โ |
| โ132.2 | โ9.50 | โ411.20 | โ | |
per 1 mol of | โ16.53 | โ1.19 | โ51.400 | โ |
per 1 mol of | โ198.3 | โ14.3 | โ616.80 | โ |
per 1 mol of | โ24.79 | โ1.78 | โ77.100 | โ |
Changes in aqueous solution (1)
- Reaction of iron(II,III) oxide and under neutral conditionโ
ฮrG 404.9 kJ/mol K 0.12 ร 10โ70 pK 70.94
| 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 | 404.9 | โ | โ |
per 1 mol of | โ | 67.48 | โ | โ |
| โ | 135.0 | โ | โ | |
per 1 mol of | โ | 16.87 | โ | โ |
per 1 mol of | โ | 202.4 | โ | โ |
per 1 mol of | โ | 25.31 | โ | โ |
Changes in aqueous solution (2)
- Reaction of iron(II,III) oxide and under neutral conditionโ
ฮrG 417.3 kJ/mol K 0.78 ร 10โ73 pK 73.11
| 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 | 417.3 | โ | โ |
per 1 mol of | โ | 69.55 | โ | โ |
| โ | 139.1 | โ | โ | |
per 1 mol of | โ | 17.39 | โ | โ |
per 1 mol of | โ | 208.7 | โ | โ |
per 1 mol of | โ | 26.08 | 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 |
|---|---|---|---|---|
| Fe3O4 (cr) | -1118.4[1] | -1015.4[1] | 146.4[1] | 143.43[1] |
| (g) | 0[1] | 0[1] | 223.066[1] | 33.907[1] |
| (ao) | -23.4[1] | 6.94[1] | 121[1] | 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, (ao):Un-ionized aqueous solution, (l):Liquid
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 |
|---|---|---|---|---|
| FeCl3 (cr) | -399.49[1] | -334.00[1] | 142.3[1] | 96.65[1] |
| FeCl3 (g) | -254.0[1] | โ | โ | โ |
| FeCl3 (ai) | -550.2[1] | -398.3[1] | -146.4[1] | โ |
| FeCl3 (ao) | โ | -404.5[1] | โ | โ |
| FeCl3 (cr) 6 hydrate | -2223.8[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 |
* (cr):Crystalline solid, (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)
- ^ 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, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 223.066 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 33.907 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -23.4 kJ ยท molโ1
- ^ ฮfGยฐ, 6.94 kJ ยท molโ1
- ^ Sยฐ, 121. J ยท Kโ1 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
- ^ ฮfHยฐ, -399.49 kJ ยท molโ1
- ^ ฮfGยฐ, -334.00 kJ ยท molโ1
- ^ Sยฐ, 142.3 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 96.65 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -254.0 kJ ยท molโ1
- ^ ฮfHยฐ, -550.2 kJ ยท molโ1
- ^ ฮfGยฐ, -398.3 kJ ยท molโ1
- ^ Sยฐ, -146.4 J ยท Kโ1 ยท molโ1
- ^ ฮfGยฐ, -404.5 kJ ยท molโ1
- ^ ฮfHยฐ, -2223.8 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