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2LiH + 2MnO2 → Li2O + 2MnO + H2O

The reaction of lithium hydride and manganese(IV) oxide yields lithium oxide, manganese(II) oxide, 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 reducible species
Reducing speciesReducing agent + Reducible speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
LiHLithium hydride2
Reducing
Reducing
MnO2Manganese(IV) oxide2
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
Li2OLithium oxide1
MnOManganese(II) oxide2
Reduced
H2OWater1
Oxidized

Thermodynamic changes

Changes in standard condition (1)

Reaction of lithium hydride and manganese(IV) oxide
2LiHCrystalline solid + 2MnO2Crystalline solid
Li2OCrystalline solid + 2MnOCrystalline solid + H2OLiquid
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
79.9654.41
per 1 mol of
39.9827.20
39.9827.20
per 1 mol of
79.9654.41
39.9827.20
per 1 mol of
79.9654.41

Changes in standard condition (2)

Reaction of lithium hydride and manganese(IV) oxide
2LiHCrystalline solid + 2MnO2Amorphous solidprecipitated
Li2OCrystalline solid + 2MnOCrystalline solid + H2OLiquid
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
per 1 mol of
per 1 mol of
per 1 mol of

Changes in aqueous solution

Reaction of lithium hydride and manganese(IV) oxide
2LiHCrystalline solid + 2MnO2Crystalline solid
Li2OCrystalline solid + 2MnOCrystalline solid + H2OLiquid
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
79.9654.41
per 1 mol of
39.9827.20
39.9827.20
per 1 mol of
79.9654.41
39.9827.20
per 1 mol of
79.9654.41

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
LiH (cr)20.422[1]28.79[1]
LiH (g)139.24[1]116.47[1]170.900[1]29.727[1]
MnO2 (cr)-520.03[1]-465.14[1]53.05[1]54.14[1]
MnO2 (am)
precipitated
-502.5[1]
* (cr):Crystalline solid, (g):Gas, (am):Amorphous 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
Li2O (cr)-597.94[1]-561.18[1]37.57[1]54.10[1]
Li2O (g)-160.7[1]-181.6[1]231.48[1]49.83[1]
MnO (cr)-385.22[1]-362.90[1]59.71[1]45.44[1]
MnO (g)124.22[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, (g):Gas, (l):Liquid

References

List of references

  1. 1