3AsI3 + 20HNO3 🔥→ 3H3AsO4 + 9HIO3 + 20NO↑ + H2O
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- Reaction of and nitric acid
The reaction of and nitric acid yields arsenic acid, iodic acid, nitrogen monoxide, 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 and nitric acid
General equation
- Reaction of reducing species and oxidizing species
- Reducing speciesReducing agent + Oxidizing speciesOxidizing agent ⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Reaction of and nitric acid
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
3 | Reducing | Reducing | ||
HNO3 | Nitric acid | 20 | Oxidizing | Oxidizing |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
H3AsO4 | Arsenic acid | 3 | Oxidized | – |
HIO3 | Iodic acid | 9 | Oxidized | – |
NO | Nitrogen monoxide | 20 | Reduced | – |
H2O | Water | 1 | – | – |
Thermodynamic changes
Changes in standard condition
- Reaction of and nitric acid
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 386.0 | – | – | – |
128.7 | – | – | – | |
per 1 mol of | 19.30 | – | – | – |
per 1 mol of | 128.7 | – | – | – |
per 1 mol of | 42.89 | – | – | – |
per 1 mol of | 19.30 | – | – | – |
per 1 mol of | 386.0 | – | – | – |
Changes in aqueous solution (1)
- Reaction of and nitric acid◆
ΔrG 405.7 kJ/mol K 0.84 × 10−71 pK 71.08
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 1231.8 | 405.7 | 2772 | – |
410.60 | 135.2 | 924.0 | – | |
per 1 mol of | 61.590 | 20.29 | 138.6 | – |
per 1 mol of | 410.60 | 135.2 | 924.0 | – |
per 1 mol of | 136.87 | 45.08 | 308.0 | – |
per 1 mol of | 61.590 | 20.29 | 138.6 | – |
per 1 mol of | 1231.8 | 405.7 | 2772 | – |
Changes in aqueous solution (2)
- Reaction of and nitric acid
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 1225.5 | – | – | – |
408.50 | – | – | – | |
per 1 mol of | 61.275 | – | – | – |
per 1 mol of | 408.50 | – | – | – |
per 1 mol of | 136.17 | – | – | – |
per 1 mol of | 61.275 | – | – | – |
per 1 mol of | 1225.5 | – | – | – |
Thermodynamic data of reactants
Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
---|---|---|---|---|
(cr) | -58.2[1] | -59.4[1] | 213.05[1] | 105.77[1] |
(g) | – | – | 388.34[1] | 80.63[1] |
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] |
* (cr):Crystalline solid, (g):Gas, (l):Liquid, (ai):Ionized aqueous solution
Thermodynamic data of products
Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
---|---|---|---|---|
H3AsO4 (cr) | -906.3[1] | – | – | – |
H3AsO4 (ao) | -902.5[1] | -766.0[1] | 184[1] | – |
H3AsO4 (aq) | -904.6[1] | – | – | – |
HIO3 (cr) | -230.1[1] | – | – | – |
HIO3 (ao) | -211.3[1] | -132.6[1] | 166.9[1] | – |
NO (g) | 90.25[1] | 86.55[1] | 210.761[1] | 29.844[1] |
H2O (cr) | – | – | – | – |
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, (ao):Un-ionized aqueous solution, (aq):Aqueous solution, (g):Gas, (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)
- ^ ΔfH°, -58.2 kJ · mol−1
- ^ ΔfG°, -59.4 kJ · mol−1
- ^ S°, 213.05 J · K−1 · mol−1
- ^ Cp°, 105.77 J · K−1 · mol−1
- ^ S°, 388.34 J · K−1 · mol−1
- ^ Cp°, 80.63 J · K−1 · mol−1
- ^ ΔfH°, -174.10 kJ · mol−1
- ^ ΔfG°, -80.71 kJ · mol−1
- ^ S°, 155.60 J · K−1 · mol−1
- ^ Cp°, 109.87 J · K−1 · mol−1
- ^ ΔfH°, -135.06 kJ · mol−1
- ^ ΔfG°, -74.72 kJ · mol−1
- ^ S°, 266.38 J · K−1 · mol−1
- ^ Cp°, 53.35 J · K−1 · mol−1
- ^ ΔfH°, -207.36 kJ · mol−1
- ^ ΔfG°, -111.25 kJ · mol−1
- ^ S°, 146.4 J · K−1 · mol−1
- ^ Cp°, -86.6 J · K−1 · mol−1
- ^ ΔfH°, -473.46 kJ · mol−1
- ^ ΔfG°, -328.77 kJ · mol−1
- ^ S°, 216.90 J · K−1 · mol−1
- ^ Cp°, 182.46 J · K−1 · mol−1
- ^ ΔfH°, -1056.04 kJ · mol−1
- ^ ΔfG°, -811.09 kJ · mol−1
- ^ S°, 346.98 J · K−1 · mol−1
- ^ Cp°, 325.14 J · K−1 · mol−1
- ^ ΔfH°, -906.3 kJ · mol−1
- ^ ΔfH°, -902.5 kJ · mol−1
- ^ ΔfG°, -766.0 kJ · mol−1
- ^ S°, 184. J · K−1 · mol−1
- ^ ΔfH°, -904.6 kJ · mol−1
- ^ ΔfH°, -230.1 kJ · mol−1
- ^ ΔfH°, -211.3 kJ · mol−1
- ^ ΔfG°, -132.6 kJ · mol−1
- ^ S°, 166.9 J · K−1 · mol−1
- ^ ΔfH°, 90.25 kJ · mol−1
- ^ ΔfG°, 86.55 kJ · mol−1
- ^ S°, 210.761 J · K−1 · mol−1
- ^ Cp°, 29.844 J · K−1 · mol−1
- ^ ΔfH°, -285.830 kJ · mol−1
- ^ ΔfG°, -237.129 kJ · mol−1
- ^ S°, 69.91 J · K−1 · mol−1
- ^ Cp°, 75.291 J · K−1 · mol−1
- ^ ΔfH°, -241.818 kJ · mol−1
- ^ ΔfG°, -228.572 kJ · mol−1
- ^ S°, 188.825 J · K−1 · mol−1
- ^ Cp°, 33.577 J · K−1 · mol−1