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2AsCl3 + 4Fe2O3 → 2FeAsO4 + 3FeCl2 + Fe3O4

The reaction of arsenic trichloride and iron(III) oxide yields iron(III) arsenate, iron(II) chloride, and iron(II,III) oxide (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 reducible species
Reducing speciesReducing agent + Reducible speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
AsCl3Arsenic trichloride2
Reducing
Reducing
Fe2O3Iron(III) oxide4
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
FeAsO4Iron(III) arsenate2
Oxidized
FeCl2Iron(II) chloride3
Reduced
Fe3O4Iron(II,III) oxide1
Reduced

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
AsCl3 (l)-305.0[1]-259.4[1]216.3[1]
AsCl3 (g)-261.5[1]-248.9[1]327.17[1]75.73[1]
Fe2O3 (cr)-824.2[1]-742.2[1]87.40[1]103.85[1]
* (l):Liquid, (g):Gas, (cr):Crystalline solid

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
FeAsO4
FeCl2 (cr)-341.79[1]-302.30[1]117.95[1]76.65[1]
FeCl2 (g)-148.5[1]
FeCl2 (ai)-423.4[1]-341.34[1]-24.7[1]
FeCl2 (ao)-279.1[1]
FeCl2 (cr)
2 hydrate
-953.1[1]
FeCl2 (cr)
4 hydrate
-1549.3[1]
Fe3O4 (cr)-1118.4[1]-1015.4[1]146.4[1]143.43[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution

References

List of references

  1. 1