2Ni(NO3)2 🔥→ 2NiO + 4NO↑ + 3O2↑
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- Decomposition of nickel(II) nitrate
Decomposition of nickel(II) nitrate yields nickel(II) oxide, nitrogen monoxide, and (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Decomposition of nickel(II) nitrate
General equation
- Thermal decomposition with redox
- Thermally decomposable substanceSelf redox agent🔥⟶ ProductOxidation product + ProductReduction product
- Thermal decomposition of oxoacid salt with redox
- Oxoacid saltSelf redox agent🔥⟶ ProductOxidation product + ProductReduction product
Oxidation state of each atom
- Decomposition of nickel(II) nitrate
Reactants
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| Ni(NO3)2 | Nickel(II) nitrate | 2 | Self redox agent | Thermally decomposable Oxoacid salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| NiO | Nickel(II) oxide | 2 | – | – |
| NO | Nitrogen monoxide | 4 | Reduced | – |
| 3 | Oxidized | – |
Thermodynamic changes
Changes in standard condition
- Decomposition of nickel(II) nitrate
| 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 | 711.8 | – | – | – |
per 1 mol of | 355.9 | – | – | – |
per 1 mol of | 355.9 | – | – | – |
per 1 mol of | 177.9 | – | – | – |
| 237.3 | – | – | – |
Changes in aqueous solution (1)
- Decomposition of nickel(II) nitrate◆
ΔrG 459.8 kJ/mol K 0.28 × 10−80 pK 80.55
| 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 | 818.8 | 459.8 | 1206.4 | – |
per 1 mol of | 409.4 | 229.9 | 603.20 | – |
per 1 mol of | 409.4 | 229.9 | 603.20 | – |
per 1 mol of | 204.7 | 115.0 | 301.60 | – |
| 272.9 | 153.3 | 402.13 | – |
Changes in aqueous solution (2)
- Decomposition of nickel(II) nitrate◆
ΔrG 509.0 kJ/mol K 0.67 × 10−89 pK 89.17
| 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 | 783.7 | 509.0 | 923.7 | – |
per 1 mol of | 391.9 | 254.5 | 461.9 | – |
per 1 mol of | 391.9 | 254.5 | 461.9 | – |
per 1 mol of | 195.9 | 127.3 | 230.9 | – |
| 261.2 | 169.7 | 307.9 | – |
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 |
|---|---|---|---|---|
| Ni(NO3)2 (cr) | -415.1[1] | – | – | – |
| Ni(NO3)2 (ai) | -468.6[1] | -268.5[1] | 164.0[1] | – |
| Ni(NO3)2 (cr) 3 hydrate | -1326.3[1] | – | – | – |
| Ni(NO3)2 (cr) 6 hydrate | -2211.7[1] | – | – | 464[1] |
* (cr):Crystalline solid, (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 |
|---|---|---|---|---|
| NiO (cr) | -239.7[1] | -211.7[1] | 37.99[1] | 44.31[1] |
| NiO (g) | 314[1] | – | – | – |
| NO (g) | 90.25[1] | 86.55[1] | 210.761[1] | 29.844[1] |
| (g) | 0[1] | 0[1] | 205.138[1] | 29.355[1] |
| (ao) | -11.7[1] | 16.4[1] | 110.9[1] | – |
* (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)
- ^ ΔfH°, -415.1 kJ · mol−1
- ^ ΔfH°, -468.6 kJ · mol−1
- ^ ΔfG°, -268.5 kJ · mol−1
- ^ S°, 164.0 J · K−1 · mol−1
- ^ ΔfH°, -1326.3 kJ · mol−1
- ^ ΔfH°, -2211.7 kJ · mol−1
- ^ Cp°, 464. J · K−1 · mol−1
- ^ ΔfH°, -239.7 kJ · mol−1
- ^ ΔfG°, -211.7 kJ · mol−1
- ^ S°, 37.99 J · K−1 · mol−1
- ^ Cp°, 44.31 J · K−1 · mol−1
- ^ ΔfH°, 314. kJ · 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°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 205.138 J · K−1 · mol−1
- ^ Cp°, 29.355 J · K−1 · mol−1
- ^ ΔfH°, -11.7 kJ · mol−1
- ^ ΔfG°, 16.4 kJ · mol−1
- ^ S°, 110.9 J · K−1 · mol−1