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2Fe + 3CO2 → 2FeCO3 + C

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Reaction of iron and carbon dioxide
2FeIron + 3CO2Carbon dioxide
⟶
2FeCO3Iron(II) carbonate + CCarbon

The reaction of iron and carbon dioxide yields iron(II) carbonate and carbon (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

Reaction of iron and carbon dioxide
2FeIron + 3CO2Carbon dioxide
⟶
2FeCO3Iron(II) carbonate + CCarbon

General equation

Reaction of reducing species and reducible species
Reducing speciesReducing agent + Reducible speciesOxidizing agent
⟶
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of iron and carbon dioxide

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
FeIron2
Reducing
Reducing
CO2Carbon dioxide3
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
FeCO3Iron(II) carbonate2
Oxidized
–
CCarbon1
Reduced
–

Thermodynamic changes

Changes in standard condition (1)

Reaction of iron and carbon dioxide
◆
ΔrG−150.26 kJ/mol
K2.11 × 1026
pK−26.32
2FeCrystalline solid + 3CO2Gas
⟶
2FeCO3Crystalline solidsiderite + CCrystalline solidgraphite
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
−300.61−150.26−504.211.26
per 1 mol of
−150.31−75.130−252.15.630
per 1 mol of
−100.20−50.087−168.13.753
per 1 mol of
−150.31−75.130−252.15.630
per 1 mol of
−300.61−150.26−504.211.26

Changes in standard condition (2)

Reaction of iron and carbon dioxide
◆
ΔrG−147.36 kJ/mol
K6.55 × 1025
pK−25.82
2FeCrystalline solid + 3CO2Gas
⟶
2FeCO3Crystalline solidsiderite + CCrystalline soliddiamond
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
−298.72−147.36−507.68.84
per 1 mol of
−149.36−73.680−253.84.42
per 1 mol of
−99.573−49.120−169.22.95
per 1 mol of
−149.36−73.680−253.84.42
per 1 mol of
−298.72−147.36−507.68.84

Changes in aqueous solution

Reaction of iron and carbon dioxide
◆
ΔrG−175.40 kJ/mol
K5.35 × 1030
pK−30.73
2FeCrystalline solid + 3CO2Un-ionized aqueous solution
⟶
2FeCO3Crystalline solidsiderite + CCrystalline solidgraphite
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
−239.74−175.40−215.8–
per 1 mol of
−119.87−87.700−107.9–
per 1 mol of
−79.913−58.467−71.93–
per 1 mol of
−119.87−87.700−107.9–
per 1 mol of
−239.74−175.40−215.8–

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
Fe (cr)0[1]0[1]27.28[1]25.10[1]
Fe (g)416.3[1]370.7[1]180.490[1]25.677[1]
CO2 (g)-393.509[1]-394.359[1]213.74[1]37.11[1]
CO2 (ao)-413.80[1]-385.98[1]117.6[1]–
* (cr):Crystalline solid, (g):Gas, (ao):Un-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
FeCO3 (cr)
siderite
-740.57[1]-666.67[1]92.9[1]82.13[1]
C (cr)
graphite
0[1]0[1]5.740[1]8.527[1]
C (cr)
diamond
1.895[1]2.900[1]2.377[1]6.113[1]
C (g)716.682[1]671.257[1]158.096[1]20.838[1]
* (cr):Crystalline solid, (g):Gas

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)