3NH4ClO4 🔥→ 3NH4ClO3 + O3↑
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- Decomposition of ammonium perchlorate
Decomposition of ammonium perchlorate yields ammonium chlorate 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 ammonium perchlorate
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 ammonium perchlorate
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
NH4ClO4 | Ammonium perchlorate | 3 | Self redox agent | Thermally decomposable Oxoacid salt |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
NH4ClO3 | Ammonium chlorate | 3 | Reduced | – |
1 | Oxidized | – |
Thermodynamic changes
Changes in aqueous solution (1)
- Decomposition of ammonium perchlorate◆
ΔrG 164.9 kJ/mol K 0.13 × 10−28 pK 28.89
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 | 218.8 | 164.9 | 179.8 | – |
per 1 mol of | 72.93 | 54.97 | 59.93 | – |
per 1 mol of | 72.93 | 54.97 | 59.93 | – |
218.8 | 164.9 | 179.8 | – |
Changes in aqueous solution (2)
- Decomposition of ammonium perchlorate◆
ΔrG 175.8 kJ/mol K 0.16 × 10−30 pK 30.80
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 | 202.0 | 175.8 | 87 | – |
per 1 mol of | 67.33 | 58.60 | 29 | – |
per 1 mol of | 67.33 | 58.60 | 29 | – |
202.0 | 175.8 | 87 | – |
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 |
---|---|---|---|---|
NH4ClO4 (cr) | -295.31[1] | -88.75[1] | 186.2[1] | – |
NH4ClO4 (ai) | -261.83[1] | -87.83[1] | 295.4[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 |
---|---|---|---|---|
NH4ClO3 (ai) | -236.48[1] | -87.26[1] | 275.7[1] | – |
(g) | 142.7[1] | 163.2[1] | 238.93[1] | 39.20[1] |
(ao) | 125.9[1] | 174.1[1] | 146[1] | – |
* (ai):Ionized aqueous solution, (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°, -295.31 kJ · mol−1
- ^ ΔfG°, -88.75 kJ · mol−1
- ^ S°, 186.2 J · K−1 · mol−1
- ^ ΔfH°, -261.83 kJ · mol−1
- ^ ΔfG°, -87.83 kJ · mol−1
- ^ S°, 295.4 J · K−1 · mol−1
- ^ ΔfH°, -236.48 kJ · mol−1
- ^ ΔfG°, -87.26 kJ · mol−1
- ^ S°, 275.7 J · K−1 · mol−1
- ^ ΔfH°, 142.7 kJ · mol−1
- ^ ΔfG°, 163.2 kJ · mol−1
- ^ S°, 238.93 J · K−1 · mol−1
- ^ Cp°, 39.20 J · K−1 · mol−1
- ^ ΔfH°, 125.9 kJ · mol−1
- ^ ΔfG°, 174.1 kJ · mol−1
- ^ S°, 146. J · K−1 · mol−1