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2CH3COONH4 + 4HNO3 → 4HNO2 + 2NH4HCO3 + CH3COOH

The reaction of ammonium acetate and nitric acid yields nitrous acid, ammonium hydrogencarbonate, and acetic acid (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

Reaction of reducing species and oxidizing species
Reducing speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CH3COONH4Ammonium acetate2
Reducing
Reducing
HNO3Nitric acid4
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
HNO2Nitrous acid4
Reduced
NH4HCO3Ammonium hydrogencarbonate2
Oxidized
CH3COOHAcetic acid1

Thermodynamic changes

Changes in standard condition (1)

Reaction of ammonium acetate and nitric acid
ΔrG−561.6 kJ/mol
K2.44 × 1098
pK−98.39
2CH3COONH4Ionized aqueous solution + 4HNO3Ionized aqueous solution
4HNO2Un-ionized aqueous solution + 2NH4HCO3Ionized aqueous solution + CH3COOHIonized aqueous solution
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
−545.3−561.652.6
per 1 mol of
−272.6−280.826.3
per 1 mol of
−136.3−140.413.2
per 1 mol of
−136.3−140.413.2
−272.6−280.826.3
per 1 mol of
−545.3−561.652.6

Changes in standard condition (2)

Reaction of ammonium acetate and nitric acid
ΔrG−588.8 kJ/mol
K1.42 × 10103
pK−103.15
2CH3COONH4Ionized aqueous solution + 4HNO3Ionized aqueous solution
4HNO2Un-ionized aqueous solution + 2NH4HCO3Ionized aqueous solution + CH3COOHUn-ionized aqueous solution
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
−545.1−588.8144.7
per 1 mol of
−272.6−294.472.35
per 1 mol of
−136.3−147.236.17
per 1 mol of
−136.3−147.236.17
−272.6−294.472.35
per 1 mol of
−545.1−588.8144.7

Changes in standard condition (3)

Reaction of ammonium acetate and nitric acid
2CH3COONH4Ionized aqueous solution + 4HNO3Ionized aqueous solution
4HNO2Un-ionized aqueous solution + 2NH4HCO3Aqueous solution + CH3COOHIonized aqueous solution
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
−539.7
per 1 mol of
−269.9
per 1 mol of
−134.9
per 1 mol of
−134.9
−269.9
per 1 mol of
−539.7

Changes in standard condition (4)

Reaction of ammonium acetate and nitric acid
2CH3COONH4Ionized aqueous solution + 4HNO3Ionized aqueous solution
4HNO2Un-ionized aqueous solution + 2NH4HCO3Aqueous solution + CH3COOHUn-ionized aqueous solution
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
−539.5
per 1 mol of
−269.8
per 1 mol of
−134.9
per 1 mol of
−134.9
−269.8
per 1 mol of
−539.5

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
CH3COONH4 (cr)-616.14[1]
CH3COONH4 (ai)-618.52[1]-448.61[1]200.0[1]73.6[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 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
HNO2 (g)
cis
-77.99[1]-42.94[1]248.76[1]44.77[1]
HNO2 (g)
trans
-80.12[1]-45.24[1]249.22[1]46.07[1]
HNO2 (g)-79.5[1]-46.0[1]254.1[1]45.6[1]
HNO2 (ao)-119.2[1]-50.6[1]135.6[1]
NH4HCO3 (cr)-849.4[1]-665.9[1]120.9[1]
NH4HCO3 (ai)-824.50[1]-666.07[1]204.6[1]
NH4HCO3 (aq)-821.7[1]
CH3COOH (l)-484.5[1]-389.9[1]159.8[1]124.3[1]
CH3COOH (g)-432.25[1]-374.0[1]282.5[1]66.5[1]
CH3COOH (ai)-486.01[1]-369.31[1]86.6[1]-6.3[1]
CH3COOH (ao)-485.76[1]-396.46[1]178.7[1]
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):Aqueous solution, (l):Liquid

References

List of references

  1. 1
    Janiel J. Reed (1989)
    The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI Units
    National Institute of Standards and Technology (NIST)