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8Na4[Fe(CN)6] + 106HNO3 → 32NaNO3 + 8Fe(NO3)3 + 49N2O↑ + 48CO↑ + 53H2O

The reaction of sodium hexacyanidoferrate(II) and nitric acid yields sodium nitrate, iron(III) nitrate, dinitrotgen monoxide, carbon monoxide, 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

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
Na4[Fe(CN)6]Sodium hexacyanidoferrate(II)8
Reducing
Reducing
HNO3Nitric acid106
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
NaNO3Sodium nitrate32
Fe(NO3)3Iron(III) nitrate8
Oxidized
N2ODinitrotgen monoxide49
Redoxed product
COCarbon monoxide48
H2OWater53

Thermodynamic changes

Changes in aqueous solution (1)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
ΔrG−14080.6 kJ/mol
K6.52 × 102466
pK−2466.81
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Ionized aqueous solution + 49N2OGas + 48COGas + 53H2OLiquid
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
−10098.5−14080.613359.8
−1262.31−1760.081669.97
per 1 mol of
−95.2689−132.836126.036
per 1 mol of
−315.578−440.019417.494
per 1 mol of
−1262.31−1760.081669.97
−206.092−287.359272.649
per 1 mol of
−210.385−293.346278.329
per 1 mol of
−190.538−265.672252.072

Changes in aqueous solution (2)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
ΔrG−13251.7 kJ/mol
K3.96 × 102321
pK−2321.60
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Ionized aqueous solution + 49N2OGas + 48COUn-ionized aqueous solution + 53H2OLiquid
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
−10599.4−13251.78892.3
−1324.92−1656.461111.5
per 1 mol of
−99.9943−125.01683.890
per 1 mol of
−331.231−414.116277.88
per 1 mol of
−1324.92−1656.461111.5
−216.314−270.443181.48
per 1 mol of
−220.821−276.077185.26
per 1 mol of
−199.989−250.032167.78

Changes in aqueous solution (3)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Ionized aqueous solution + 49N2OAqueous solution + 48COGas + 53H2OLiquid
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
−11370.1
−1421.26
per 1 mol of
−107.265
per 1 mol of
−355.316
per 1 mol of
−1421.26
−232.043
per 1 mol of
−236.877
per 1 mol of
−214.530

Changes in aqueous solution (4)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Ionized aqueous solution + 49N2OAqueous solution + 48COUn-ionized aqueous solution + 53H2OLiquid
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
−11871.0
−1483.88
per 1 mol of
−111.991
per 1 mol of
−370.969
per 1 mol of
−1483.88
−242.265
per 1 mol of
−247.313
per 1 mol of
−223.981

Changes in aqueous solution (5)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Aqueous solution + 49N2OGas + 48COGas + 53H2OLiquid
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
−10132.1
−1266.51
per 1 mol of
−95.5858
per 1 mol of
−316.628
per 1 mol of
−1266.51
−206.778
per 1 mol of
−211.085
per 1 mol of
−191.172

Changes in aqueous solution (6)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Aqueous solution + 49N2OGas + 48COUn-ionized aqueous solution + 53H2OLiquid
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
−10633.0
−1329.13
per 1 mol of
−100.311
per 1 mol of
−332.281
per 1 mol of
−1329.13
−217.000
per 1 mol of
−221.521
per 1 mol of
−200.623

Changes in aqueous solution (7)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Aqueous solution + 49N2OAqueous solution + 48COGas + 53H2OLiquid
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
−11403.7
−1425.46
per 1 mol of
−107.582
per 1 mol of
−356.366
per 1 mol of
−1425.46
−232.729
per 1 mol of
−237.577
per 1 mol of
−215.164

Changes in aqueous solution (8)

Reaction of sodium hexacyanidoferrate(II) and nitric acid
8Na4[Fe(CN)6]Ionized aqueous solution + 106HNO3Ionized aqueous solution
32NaNO3Ionized aqueous solution + 8Fe(NO3)3Aqueous solution + 49N2OAqueous solution + 48COUn-ionized aqueous solution + 53H2OLiquid
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
−11904.6
−1488.08
per 1 mol of
−112.308
per 1 mol of
−372.019
per 1 mol of
−1488.08
−242.951
per 1 mol of
−248.013
per 1 mol of
−224.615

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
Na4[Fe(CN)6] (ai)-505.0[1]-352.53[1]331.0[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]
* (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
NaNO3 (cr)-467.85[1]-367.00[1]116.52[1]92.88[1]
NaNO3 (ai)-447.48[1]-373.15[1]205.4[1]-40.2[1]
Fe(NO3)3 (ai)-670.7[1]-338.3[1]123.4[1]
Fe(NO3)3 (aq)-674.9[1]
Fe(NO3)3 (cr)
9 hydrate
-3285.3[1]
N2O (g)82.05[1]104.20[1]219.85[1]38.45[1]
N2O (aq)56.1[1]
CO (g)-110.525[1]-137.168[1]197.674[1]29.142[1]
CO (ao)-120.96[1]-119.90[1]104.6[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, (aq):Aqueous solution, (g):Gas, (ao):Un-ionized 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)