Na4[Fe(CN)6] + 8HNO3 ๐ฅโ 4NaNO3 + Fe(NO3)3 + NO2โ + 6HCN + H2O
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The reaction of sodium hexacyanidoferrate(II) and nitric acid yields sodium nitrate, iron(III) nitrate, nitrogen dioxide, hydrogen cyanide, and water (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 sodium hexacyanidoferrate(II) and nitric acid
General equation
- Reaction of reducing species and oxidizing species
- Reducing speciesReducing agent + Oxidizing speciesOxidizing agent โถ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of sodium hexacyanidoferrate(II) and nitric acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Na4[Fe(CN)6] | Sodium hexacyanidoferrate(II) | 1 | Reducing | Reducing |
| HNO3 | Nitric acid | 8 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NaNO3 | Sodium nitrate | 4 | โ | โ |
| Fe(NO3)3 | Iron(III) nitrate | 1 | Oxidized | โ |
| NO2 | Nitrogen dioxide | 1 | Reduced | โ |
| HCN | Hydrogen cyanide | 6 | โ | โ |
| H2O | Water | 1 | โ | โ |
Thermodynamic changes
Changes in aqueous solution (1)
- Reaction of sodium hexacyanidoferrate(II) and nitric acidโ
ฮrG โ56.0 kJ/mol K 6.47 ร 109 pK โ9.81
| 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 | 93.2 | โ56.0 | 501.0 | โ |
per 1 mol of | 93.2 | โ56.0 | 501.0 | โ |
per 1 mol of | 11.7 | โ7.00 | 62.63 | โ |
per 1 mol of | 23.3 | โ14.0 | 125.3 | โ |
per 1 mol of | 93.2 | โ56.0 | 501.0 | โ |
per 1 mol of | 93.2 | โ56.0 | 501.0 | โ |
per 1 mol of | 15.5 | โ9.33 | 83.50 | โ |
per 1 mol of | 93.2 | โ56.0 | 501.0 | โ |
Changes in aqueous solution (2)
- Reaction of sodium hexacyanidoferrate(II) and nitric acid
| 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 | 89.0 | โ | โ | โ |
per 1 mol of | 89.0 | โ | โ | โ |
per 1 mol of | 11.1 | โ | โ | โ |
per 1 mol of | 22.3 | โ | โ | โ |
per 1 mol of | 89.0 | โ | โ | โ |
per 1 mol of | 89.0 | โ | โ | โ |
per 1 mol of | 14.8 | โ | โ | โ |
per 1 mol of | 89.0 | โ | โ | โ |
Changes in aqueous solution (3)
- Reaction of sodium hexacyanidoferrate(II) and nitric acidโ
ฮrG 260.2 kJ/mol K 0.26 ร 10โ45 pK 45.59
| 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 | 354.2 | 260.2 | 317.4 | โ |
per 1 mol of | 354.2 | 260.2 | 317.4 | โ |
per 1 mol of | 44.27 | 32.52 | 39.67 | โ |
per 1 mol of | 88.55 | 65.05 | 79.35 | โ |
per 1 mol of | 354.2 | 260.2 | 317.4 | โ |
per 1 mol of | 354.2 | 260.2 | 317.4 | โ |
per 1 mol of | 59.03 | 43.37 | 52.90 | โ |
per 1 mol of | 354.2 | 260.2 | 317.4 | โ |
Changes in aqueous solution (4)
- Reaction of sodium hexacyanidoferrate(II) and nitric acid
| 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 | 350.0 | โ | โ | โ |
per 1 mol of | 350.0 | โ | โ | โ |
per 1 mol of | 43.75 | โ | โ | โ |
per 1 mol of | 87.50 | โ | โ | โ |
per 1 mol of | 350.0 | โ | โ | โ |
per 1 mol of | 350.0 | โ | โ | โ |
per 1 mol of | 58.33 | โ | โ | โ |
per 1 mol of | 350.0 | 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 |
|---|---|---|---|---|
| Na4[Fe(CN)6] (ai) | -505.0[1] | -352.53[1] | 331.0[1] | โ |
| HNO3 (l) | -174.10[1] | -80.71[1] | 155.60[1] | 109.87[1] |
| HNO3 (g) | -135.06[1] | -74.72[1] | 266.38[1] | 53.35[1] |
| HNO3 (ai) | -207.36[1] | -111.25[1] | 146.4[1] | -86.6[1] |
| HNO3 (l) 1 hydrate | -473.46[1] | -328.77[1] | 216.90[1] | 182.46[1] |
| HNO3 (l) 3 hydrate | -1056.04[1] | -811.09[1] | 346.98[1] | 325.14[1] |
* (ai):Ionized aqueous solution, (l):Liquid, (g):Gas
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 |
|---|---|---|---|---|
| NaNO3 (cr) | -467.85[1] | -367.00[1] | 116.52[1] | 92.88[1] |
| NaNO3 (ai) | -447.48[1] | -373.15[1] | 205.4[1] | -40.2[1] |
| 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 |
| NO2 (g) | 33.18[1] | 51.31[1] | 240.06[1] | 37.20[1] |
| HCN (l) | 108.87[1] | 124.97[1] | 112.84[1] | 70.63[1] |
| HCN (g) | 135.1[1] | 124.7[1] | 201.78[1] | 35.86[1] |
| HCN (ai) | 150.6[1] | 172.4[1] | 94.1[1] | โ |
| HCN (ao) | 107.1[1] | 119.7[1] | 124.7[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, (ai):Ionized aqueous solution, (aq):Aqueous solution, (g):Gas, (l):Liquid, (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, -505.0 kJ ยท molโ1
- ^ ฮfGยฐ, -352.53 kJ ยท molโ1
- ^ Sยฐ, 331.0 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -174.10 kJ ยท molโ1
- ^ ฮfGยฐ, -80.71 kJ ยท molโ1
- ^ Sยฐ, 155.60 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 109.87 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -135.06 kJ ยท molโ1
- ^ ฮfGยฐ, -74.72 kJ ยท molโ1
- ^ Sยฐ, 266.38 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 53.35 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -207.36 kJ ยท molโ1
- ^ ฮfGยฐ, -111.25 kJ ยท molโ1
- ^ Sยฐ, 146.4 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -86.6 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -473.46 kJ ยท molโ1
- ^ ฮfGยฐ, -328.77 kJ ยท molโ1
- ^ Sยฐ, 216.90 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 182.46 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -1056.04 kJ ยท molโ1
- ^ ฮfGยฐ, -811.09 kJ ยท molโ1
- ^ Sยฐ, 346.98 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 325.14 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -467.85 kJ ยท molโ1
- ^ ฮfGยฐ, -367.00 kJ ยท molโ1
- ^ Sยฐ, 116.52 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 92.88 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, -447.48 kJ ยท molโ1
- ^ ฮfGยฐ, -373.15 kJ ยท molโ1
- ^ Sยฐ, 205.4 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, -40.2 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, 33.18 kJ ยท molโ1
- ^ ฮfGยฐ, 51.31 kJ ยท molโ1
- ^ Sยฐ, 240.06 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 37.20 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 108.87 kJ ยท molโ1
- ^ ฮfGยฐ, 124.97 kJ ยท molโ1
- ^ Sยฐ, 112.84 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 70.63 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 135.1 kJ ยท molโ1
- ^ ฮfGยฐ, 124.7 kJ ยท molโ1
- ^ Sยฐ, 201.78 J ยท Kโ1 ยท molโ1
- ^ Cpยฐ, 35.86 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 150.6 kJ ยท molโ1
- ^ ฮfGยฐ, 172.4 kJ ยท molโ1
- ^ Sยฐ, 94.1 J ยท Kโ1 ยท molโ1
- ^ ฮfHยฐ, 107.1 kJ ยท molโ1
- ^ ฮfGยฐ, 119.7 kJ ยท molโ1
- ^ Sยฐ, 124.7 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