8CuSCN + 8HNO3 → 8CuS + 7N2O↑ + (NH4)2CO3 + 7CO2↑
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The reaction of copper(I) thiocyanate and nitric acid yields copper(II) sulfide, dinitrotgen monoxide, ammonium carbonate, and carbon dioxide (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 | 8 | Reducing | Reducing |
| HNO3 | Nitric acid | 8 | Oxidizing | Oxidizing |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| CuS | Copper(II) sulfide | 8 | Oxidized | – |
| N2O | Dinitrotgen monoxide | 7 | Redoxed product | – |
| (NH4)2CO3 | Ammonium carbonate | 1 | – | – |
| CO2 | Carbon dioxide | 7 | – | – |
Thermodynamic changes
Changes in aqueous solution (1)
- Reaction of copper(I) thiocyanate and nitric acid◆
ΔrG −3397.9 kJ/mol K 1.93 × 10595 pK −595.29
| 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 | −3073.2 | −3397.9 | 1086.6 | – |
per 1 mol of | −384.15 | −424.74 | 135.82 | – |
per 1 mol of | −384.15 | −424.74 | 135.82 | – |
per 1 mol of | −384.15 | −424.74 | 135.82 | – |
per 1 mol of | −439.03 | −485.41 | 155.23 | – |
per 1 mol of | −3073.2 | −3397.9 | 1086.6 | – |
per 1 mol of | −439.03 | −485.41 | 155.23 | – |
Changes in aqueous solution (2)
- Reaction of copper(I) thiocyanate and nitric acid◆
ΔrG −3339.2 kJ/mol K 1.01 × 10585 pK −585.00
| 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 | −3215.2 | −3339.2 | 413.7 | – |
per 1 mol of | −401.90 | −417.40 | 51.71 | – |
per 1 mol of | −401.90 | −417.40 | 51.71 | – |
per 1 mol of | −401.90 | −417.40 | 51.71 | – |
per 1 mol of | −459.31 | −477.03 | 59.10 | – |
per 1 mol of | −3215.2 | −3339.2 | 413.7 | – |
per 1 mol of | −459.31 | −477.03 | 59.10 | – |
Changes in aqueous solution (3)
- Reaction of copper(I) thiocyanate 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 | −3254.8 | – | – | – |
per 1 mol of | −406.85 | – | – | – |
per 1 mol of | −406.85 | – | – | – |
per 1 mol of | −406.85 | – | – | – |
per 1 mol of | −464.97 | – | – | – |
per 1 mol of | −3254.8 | – | – | – |
per 1 mol of | −464.97 | – | – | – |
Changes in aqueous solution (4)
- Reaction of copper(I) thiocyanate 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 | −3396.9 | – | – | – |
per 1 mol of | −424.61 | – | – | – |
per 1 mol of | −424.61 | – | – | – |
per 1 mol of | −424.61 | – | – | – |
per 1 mol of | −485.27 | – | – | – |
per 1 mol of | −3396.9 | – | – | – |
per 1 mol of | −485.27 | – | – | – |
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 |
|---|---|---|---|---|
| CuS (cr) | -53.1[1] | -53.6[1] | 66.5[1] | 47.82[1] |
| N2O (g) | 82.05[1] | 104.20[1] | 219.85[1] | 38.45[1] |
| N2O (aq) | 56.1[1] | – | – | – |
| (NH4)2CO3 (ai) | -942.15[1] | -686.42[1] | 169.9[1] | – |
| CO2 (g) | -393.509[1] | -394.359[1] | 213.74[1] | 37.11[1] |
| CO2 (ao) | -413.80[1] | -385.98[1] | 117.6[1] | – |
* (cr):Crystalline solid, (g):Gas, (aq):Aqueous solution, (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)
- ^ 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°, -53.1 kJ · mol−1
- ^ ΔfG°, -53.6 kJ · mol−1
- ^ S°, 66.5 J · K−1 · mol−1
- ^ Cp°, 47.82 J · K−1 · mol−1
- ^ ΔfH°, 82.05 kJ · mol−1
- ^ ΔfG°, 104.20 kJ · mol−1
- ^ S°, 219.85 J · K−1 · mol−1
- ^ Cp°, 38.45 J · K−1 · mol−1
- ^ ΔfH°, 56.1 kJ · mol−1
- ^ ΔfH°, -942.15 kJ · mol−1
- ^ ΔfG°, -686.42 kJ · mol−1
- ^ S°, 169.9 J · K−1 · mol−1
- ^ ΔfH°, -393.509 kJ · mol−1
- ^ ΔfG°, -394.359 kJ · mol−1
- ^ S°, 213.74 J · K−1 · mol−1
- ^ Cp°, 37.11 J · K−1 · mol−1
- ^ ΔfH°, -413.80 kJ · mol−1
- ^ ΔfG°, -385.98 kJ · mol−1
- ^ S°, 117.6 J · K−1 · mol−1