2CuSCN + 18HNO3 → 2CuSO4 + 3N2O4 + 14HNO2 + 2H2CO3
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The reaction of copper(I) thiocyanate and nitric acid yields copper(II) sulfate, dinitrogen tetraoxide, nitrous acid, and carbonic acid (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 copper(I) thiocyanate 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 copper(I) thiocyanate and nitric acid
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CuSCN | Copper(I) thiocyanate | 2 | Reducing | Reducing |
| HNO3 | Nitric acid | 18 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CuSO4 | Copper(II) sulfate | 2 | Oxidized | – |
| N2O4 | Dinitrogen tetraoxide | 3 | Redoxed product | – |
| HNO2 | Nitrous acid | 14 | Reduced | – |
| H2CO3 | Carbonic acid | 2 | – | – |
Thermodynamic changes
Changes in standard condition (1)
- Reaction of copper(I) thiocyanate and nitric acid◆
ΔrG −1329.2 kJ/mol K 7.34 × 10232 pK −232.87
| 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 | – | −1329.2 | – | – |
per 1 mol of | – | −664.60 | – | – |
per 1 mol of | – | −73.844 | – | – |
per 1 mol of | – | −664.60 | – | – |
per 1 mol of | – | −443.07 | – | – |
per 1 mol of | – | −94.943 | – | – |
per 1 mol of | – | −664.60 | – | – |
Changes in standard condition (2)
- Reaction of copper(I) thiocyanate and nitric acid◆
ΔrG −1268.4 kJ/mol K 1.64 × 10222 pK −222.21
| 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 | −1233.1 | −1268.4 | 114 | – |
per 1 mol of | −616.55 | −634.20 | 57.0 | – |
per 1 mol of | −68.506 | −70.467 | 6.33 | – |
per 1 mol of | −616.55 | −634.20 | 57.0 | – |
per 1 mol of | −411.03 | −422.80 | 38.0 | – |
per 1 mol of | −88.079 | −90.600 | 8.14 | – |
per 1 mol of | −616.55 | −634.20 | 57.0 | – |
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 |
|---|---|---|---|---|
| CuSCN (cr) | – | 69.9[1] | – | – |
| CuSCN (ai) | 148.11[1] | 142.69[1] | 184.9[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, (ai):Ionized aqueous solution, (l):Liquid, (g):Gas
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 |
|---|---|---|---|---|
| CuSO4 (cr) | -771.36[1] | -661.8[1] | 109[1] | 100.0[1] |
| CuSO4 (ai) | -844.50[1] | -679.04[1] | -79.5[1] | – |
| CuSO4 (ao) | – | -692.18[1] | – | – |
| CuSO4 (cr) 1 hydrate | -1085.83[1] | -918.11[1] | 146.0[1] | 134[1] |
| CuSO4 (cr) 3 hydrate | -1684.31[1] | -1399.96[1] | 221.3[1] | 205[1] |
| CuSO4 (cr) 5 hydrate | -2279.65[1] | -1879.745[1] | 300.4[1] | 280[1] |
| N2O4 (l) | -19.50[1] | 97.54[1] | 209.2[1] | 142.7[1] |
| N2O4 (g) | 9.16[1] | 97.89[1] | 304.29[1] | 77.28[1] |
| HNO2 (g) cis | -77.99[1] | -42.94[1] | 248.76[1] | 44.77[1] |
| HNO2 (g) trans | -80.12[1] | -45.24[1] | 249.22[1] | 46.07[1] |
| HNO2 (g) | -79.5[1] | -46.0[1] | 254.1[1] | 45.6[1] |
| HNO2 (ao) | -119.2[1] | -50.6[1] | 135.6[1] | – |
| H2CO3 (ao) | -699.65[1] | -623.08[1] | 187.4[1] | – |
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas
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)
- ^ ΔfG°, 69.9 kJ · mol−1
- ^ ΔfH°, 148.11 kJ · mol−1
- ^ ΔfG°, 142.69 kJ · mol−1
- ^ S°, 184.9 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°, -771.36 kJ · mol−1
- ^ ΔfG°, -661.8 kJ · mol−1
- ^ S°, 109. J · K−1 · mol−1
- ^ Cp°, 100.0 J · K−1 · mol−1
- ^ ΔfH°, -844.50 kJ · mol−1
- ^ ΔfG°, -679.04 kJ · mol−1
- ^ S°, -79.5 J · K−1 · mol−1
- ^ ΔfG°, -692.18 kJ · mol−1
- ^ ΔfH°, -1085.83 kJ · mol−1
- ^ ΔfG°, -918.11 kJ · mol−1
- ^ S°, 146.0 J · K−1 · mol−1
- ^ Cp°, 134. J · K−1 · mol−1
- ^ ΔfH°, -1684.31 kJ · mol−1
- ^ ΔfG°, -1399.96 kJ · mol−1
- ^ S°, 221.3 J · K−1 · mol−1
- ^ Cp°, 205. J · K−1 · mol−1
- ^ ΔfH°, -2279.65 kJ · mol−1
- ^ ΔfG°, -1879.745 kJ · mol−1
- ^ S°, 300.4 J · K−1 · mol−1
- ^ Cp°, 280. J · K−1 · mol−1
- ^ ΔfH°, -19.50 kJ · mol−1
- ^ ΔfG°, 97.54 kJ · mol−1
- ^ S°, 209.2 J · K−1 · mol−1
- ^ Cp°, 142.7 J · K−1 · mol−1
- ^ ΔfH°, 9.16 kJ · mol−1
- ^ ΔfG°, 97.89 kJ · mol−1
- ^ S°, 304.29 J · K−1 · mol−1
- ^ Cp°, 77.28 J · K−1 · mol−1
- ^ ΔfH°, -77.99 kJ · mol−1
- ^ ΔfG°, -42.94 kJ · mol−1
- ^ S°, 248.76 J · K−1 · mol−1
- ^ Cp°, 44.77 J · K−1 · mol−1
- ^ ΔfH°, -80.12 kJ · mol−1
- ^ ΔfG°, -45.24 kJ · mol−1
- ^ S°, 249.22 J · K−1 · mol−1
- ^ Cp°, 46.07 J · K−1 · mol−1
- ^ ΔfH°, -79.5 kJ · mol−1
- ^ ΔfG°, -46.0 kJ · mol−1
- ^ S°, 254.1 J · K−1 · mol−1
- ^ Cp°, 45.6 J · K−1 · mol−1
- ^ ΔfH°, -119.2 kJ · mol−1
- ^ ΔfG°, -50.6 kJ · mol−1
- ^ S°, 135.6 J · K−1 · mol−1
- ^ ΔfH°, -699.65 kJ · mol−1
- ^ ΔfG°, -623.08 kJ · mol−1
- ^ S°, 187.4 J · K−1 · mol−1