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Mg + MnO → MgO + Mn

The reaction of magnesium and manganese(II) oxide yields magnesium oxide and manganese. 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 categories

Reaction data

Chemical equation

General equation

Reaction of reducing species and hardly reducible species
Reducing speciesReducing agent + Hardly reducible speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
MgMagnesium1
Reducing
Reducing
MnOManganese(II) oxide1
Oxidizing
Hardly reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
MgOMagnesium oxide1
Oxidized
MnManganese1
Reduced

Thermodynamic changes

Changes in standard condition (1)

Reaction of magnesium and manganese(II) oxide
ΔrG−203.05 kJ/mol
K3.74 × 1035
pK−35.57
MgCrystalline solid + MnOCrystalline solid
MgOCrystalline solid + MnCrystalline solidα
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
−212.76−203.05−32.47−6.35
per 1 mol of
−212.76−203.05−32.47−6.35
−212.76−203.05−32.47−6.35
per 1 mol of
−212.76−203.05−32.47−6.35
per 1 mol of
−212.76−203.05−32.47−6.35

Changes in standard condition (2)

Reaction of magnesium and manganese(II) oxide
MgCrystalline solid + MnOCrystalline solid
MgOCrystalline solid + MnCrystalline solidβ
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
−30.09−6.14
per 1 mol of
−30.09−6.14
−30.09−6.14
per 1 mol of
−30.09−6.14
per 1 mol of
−30.09−6.14

Changes in standard condition (3)

Reaction of magnesium and manganese(II) oxide
ΔrG−201.63 kJ/mol
K2.11 × 1035
pK−35.32
MgCrystalline solid + MnOCrystalline solid
MgOCrystalline solid + MnCrystalline solidγ
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
−211.21−201.63−32.05−5.10
per 1 mol of
−211.21−201.63−32.05−5.10
−211.21−201.63−32.05−5.10
per 1 mol of
−211.21−201.63−32.05−5.10
per 1 mol of
−211.21−201.63−32.05−5.10

Changes in aqueous solution

Reaction of magnesium and manganese(II) oxide
ΔrG−203.05 kJ/mol
K3.74 × 1035
pK−35.57
MgCrystalline solid + MnOCrystalline solid
MgOCrystalline solid + MnCrystalline solidα
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
−212.76−203.05−32.47−6.35
per 1 mol of
−212.76−203.05−32.47−6.35
−212.76−203.05−32.47−6.35
per 1 mol of
−212.76−203.05−32.47−6.35
per 1 mol of
−212.76−203.05−32.47−6.35

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
Mg (cr)0[1]0[1]32.68[1]24.89[1]
Mg (g)147.70[1]113.10[1]148.650[1]20.786[1]
MnO (cr)-385.22[1]-362.90[1]59.71[1]45.44[1]
MnO (g)124.22[1]
* (cr):Crystalline solid, (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
MgO (cr)-597.98[1]-565.95[1]27.91[1]37.66[1]
MgO (g)17[1]
Mn (cr)
α
0[1]0[1]32.01[1]26.32[1]
Mn (cr)
β
34.39[1]26.53[1]
Mn (cr)
γ
1.55[1]1.42[1]32.43[1]27.57[1]
Mn (g)280.7[1]238.5[1]173.70[1]20.79[1]
* (cr):Crystalline solid, (g):Gas

References

List of references

  1. 1