SrI2 + 2H2O ๐งโกโ Sr(OH)2 + I2 + H2โ
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- Electrolysis of aqueous strontium iodide with water as oxidizing agent
Electrolysis of aqueous strontium iodide yields strontium hydroxide, , and . This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Electrolysis of aqueous strontium iodide with water as oxidizing agent
General equation
- Electrolysis of aqueous solution with water as oxidizing agent
- Miscible with water/Very soluble in water/Soluble in waterReducing agent + H2OOxidizing agent๐งโกโถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Electrolysis of aqueous strontium iodide with water as oxidizing agent
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| SrI2 | Strontium iodide | 1 | Reducing | Very soluble in water |
| H2O | Water | 2 | Oxidizing | Water |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Sr(OH)2 | Strontium hydroxide | 1 | โ | โ |
| 1 | Oxidized | โ | ||
| 1 | Reduced | โ |
Thermodynamic changes
Changes in standard condition
- Electrolysis of aqueous strontium iodide with water as oxidizing agent
| 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 | 170.8 | โ | โ | โ |
per 1 mol of | 170.8 | โ | โ | โ |
per 1 mol of | 85.40 | โ | โ | โ |
per 1 mol of | 170.8 | โ | โ | โ |
| 170.8 | โ | โ | โ | |
| 170.8 | โ | โ | โ |
Changes in aqueous solution (1)
- Electrolysis of aqueous strontium iodide with water as oxidizing agent
| 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 | 291.4 | โ | โ | โ |
per 1 mol of | 291.4 | โ | โ | โ |
per 1 mol of | 145.7 | โ | โ | โ |
per 1 mol of | 291.4 | โ | โ | โ |
| 291.4 | โ | โ | โ | |
| 291.4 | โ | โ | โ |
Changes in aqueous solution (2)
- Electrolysis of aqueous strontium iodide with water as oxidizing agent
| 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 | 287.2 | โ | โ | โ |
per 1 mol of | 287.2 | โ | โ | โ |
per 1 mol of | 143.6 | โ | โ | โ |
per 1 mol of | 287.2 | โ | โ | โ |
| 287.2 | โ | โ | โ | |
| 287.2 | 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 |
|---|---|---|---|---|
| SrI2 (cr) | -558.1[1] | โ | โ | 81.6[1] |
| SrI2 (g) | -272[1] | โ | โ | โ |
| SrI2 (ai) | -656.18[1] | -662.62[1] | 190.0[1] | โ |
| SrI2 (cr) 1 hydrate | -886.6[1] | โ | โ | 119.2[1] |
| SrI2 (cr) 2 hydrate | -1182.4[1] | โ | โ | 163.6[1] |
| SrI2 (cr) 6 hydrate | -2388.6[1] | โ | โ | 355.2[1] |
| 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
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 |
|---|---|---|---|---|
| Sr(OH)2 (cr) | -959.0[1] | โ | โ | โ |
| Sr(OH)2 (g) | -565[1] | โ | โ | โ |
| Sr(OH)2 (cr) 1 hydrate | -1264.8[1] | โ | โ | โ |
| Sr(OH)2 (cr) 8 hydrate | -3352.2[1] | โ | โ | โ |
| (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] | โ |
| (g) | 0[1] | 0[1] | 130.684[1] | 28.824[1] |
| (ao) | -4.2[1] | 17.6[1] | 577[1] | โ |
* (cr):Crystalline solid, (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)
- ^ ฮfHยฐ, -558.1 kJ ยท molโ1
- ^ Cpยฐ, 81.6 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -272. kJ ยท molโ1
- ^ ฮfHยฐ, -656.18 kJ ยท molโ1
- ^ ฮfGยฐ, -662.62 kJ ยท molโ1
- ^ Sยฐ, 190.0 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -886.6 kJ ยท molโ1
- ^ Cpยฐ, 119.2 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1182.4 kJ ยท molโ1
- ^ Cpยฐ, 163.6 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -2388.6 kJ ยท molโ1
- ^ Cpยฐ, 355.2 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, -959.0 kJ ยท molโ1
- ^ ฮfHยฐ, -565. kJ ยท molโ1
- ^ ฮfHยฐ, -1264.8 kJ ยท molโ1
- ^ ฮfHยฐ, -3352.2 kJ ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 116.135 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 54.438 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 62.438 kJ ยท molโ1
- ^ ฮfGยฐ, 19.327 kJ ยท molโ1
- ^ Sยฐ, 260.69 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 36.90 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 22.6 kJ ยท molโ1
- ^ ฮfGยฐ, 16.40 kJ ยท molโ1
- ^ Sยฐ, 137.2 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 0 kJ ยท molโ1
- ^ ฮfGยฐ, 0 kJ ยท molโ1
- ^ Sยฐ, 130.684 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 28.824 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -4.2 kJ ยท molโ1
- ^ ฮfGยฐ, 17.6 kJ ยท molโ1
- ^ Sยฐ, 577 J ยท Kโ1 ยท molโ1