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2NH4ClO4 🔥→ NH4NO3 + 2HClO2 + H2O

Decomposition of ammonium perchlorate yields ammonium nitrate, chlorous acid, and water (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related reactions
  5. 5Related categories

Reaction data

Chemical equation

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 formulaNameCoefficientTypeType in general
equation
NH4ClO4Ammonium perchlorate2
Self redox agent
Thermally decomposable
Oxoacid salt

Products

Chemical formulaNameCoefficientTypeType in general
equation
NH4NO3Ammonium nitrate1
Oxidized
HClO2Chlorous acid2
Reduced
H2OWater1

Thermodynamic changes

Changes in standard condition

Decomposition of ammonium perchlorate
ΔrG−240.2 kJ/mol
K1.21 × 1042
pK−42.08
2NH4ClO4Ionized aqueous solution
🔥
NH4NO3Ionized aqueous solution + 2HClO2Un-ionized aqueous solution + H2OLiquid
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
−205.8−240.2115.5
−102.9−120.157.75
per 1 mol of
−205.8−240.2115.5
per 1 mol of
−102.9−120.157.75
per 1 mol of
−205.8−240.2115.5

Thermodynamic data of reactants

Chemical formulaStandard 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 formulaStandard 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
NH4NO3 (cr)-365.56[1]-183.87[1]151.08[1]139.3[1]
NH4NO3 (ai)-339.87[1]-190.56[1]259.8[1]-6.7[1]
HClO2 (ao)-51.9[1]5.9[1]188.3[1]
H2O (cr)
H2O (l)-285.830[1]-237.129[1]69.91[1]75.291[1]
H2O (g)-241.818[1]-228.572[1]188.825[1]33.577[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas

References

List of references

  1. 1