Ni(NO3)2 🔥→ Ni + 2NO2↑ + O2↑
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- Decomposition of nickel(II) nitrate
Decomposition of nickel(II) nitrate yields , nitrogen dioxide, 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 | 1 | Self redox agent | Thermally decomposable Oxoacid salt |
Products
| Chemical formula | Name | Coefficient | Type | Type in general equation |
|---|---|---|---|---|
| 1 | Reduced | – | ||
| NO2 | Nitrogen dioxide | 2 | Reduced | – |
| 1 | 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 | 481.5 | – | – | – |
per 1 mol of | 481.5 | – | – | – |
| 481.5 | – | – | – | |
per 1 mol of | 240.8 | – | – | – |
| 481.5 | – | – | – |
Changes in aqueous solution (1)
- Decomposition of nickel(II) nitrate◆
ΔrG 371.1 kJ/mol K 0.97 × 10−65 pK 65.01
| 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 | 535.0 | 371.1 | 551.1 | – |
per 1 mol of | 535.0 | 371.1 | 551.1 | – |
| 535.0 | 371.1 | 551.1 | – | |
per 1 mol of | 267.5 | 185.6 | 275.6 | – |
| 535.0 | 371.1 | 551.1 | – |
Changes in aqueous solution (2)
- Decomposition of nickel(II) nitrate◆
ΔrG 387.5 kJ/mol K 0.13 × 10−67 pK 67.89
| 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 | 523.3 | 387.5 | 456.9 | – |
per 1 mol of | 523.3 | 387.5 | 456.9 | – |
| 523.3 | 387.5 | 456.9 | – | |
per 1 mol of | 261.6 | 193.8 | 228.4 | – |
| 523.3 | 387.5 | 456.9 | – |
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 |
|---|---|---|---|---|
| (cr) | 0[1] | 0[1] | 29.87[1] | 26.07[1] |
| (g) | 429.7[1] | 384.5[1] | 182.193[1] | 23.359[1] |
| NO2 (g) | 33.18[1] | 51.31[1] | 240.06[1] | 37.20[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°, 0 kJ · mol−1
- ^ ΔfG°, 0 kJ · mol−1
- ^ S°, 29.87 J · K−1 · mol−1
- ^ Cp°, 26.07 J · K−1 · mol−1
- ^ ΔfH°, 429.7 kJ · mol−1
- ^ ΔfG°, 384.5 kJ · mol−1
- ^ S°, 182.193 J · K−1 · mol−1
- ^ Cp°, 23.359 J · K−1 · mol−1
- ^ ΔfH°, 33.18 kJ · mol−1
- ^ ΔfG°, 51.31 kJ · mol−1
- ^ S°, 240.06 J · K−1 · mol−1
- ^ Cp°, 37.20 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