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3NH4HCO3 + 4e → 3NH3↑ + 2HCOO + 2H2O + CO32−

Reduction of ammonium hydrogencarbonate
3NH4HCO3Ammonium hydrogencarbonate + 4eElectron
3NH3Ammonia + 2HCOOFormate ion + 2H2OWater + CO32−Carbonate ion

Reduction of ammonium hydrogencarbonate yields ammonia, formate ion, water, and carbonate ion (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

Reduction of ammonium hydrogencarbonate
3NH4HCO3Ammonium hydrogencarbonate + 4eElectron
3NH3Ammonia + 2HCOOFormate ion + 2H2OWater + CO32−Carbonate ion

General equation

Reduction of reducible species
ReactantOxidizing agent + e
ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
NH4HCO3Ammonium hydrogencarbonate3
Oxidizing
eElectron4
Electron

Products

Chemical formulaNameCoefficientTypeType in general
equation
NH3Ammonia3
HCOOFormate ion2
Reduced
H2OWater2
CO32−Carbonate ion1

Thermodynamic changes

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
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]
e
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (aq):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
NH3 (g)-46.11[1]-16.45[1]192.45[1]35.06[1]
NH3 (ao)-80.29[1]-26.50[1]111.3[1]
HCOO
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]
CO32− (ao)-677.14[1]-527.81[1]-56.9[1]
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (l):Liquid

References

List of references

  1. 1