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3H2 + PbCrO4 → Cr + PbO + 3H2O

The reaction of hydrogen and lead(II) chromate yields chromium, lead(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 oxidizing species
Reducing speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of hydrogen and lead(II) chromate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
H2Hydrogen3
Reducing
Reducing
PbCrO4Lead(II) chromate1
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
CrChromium1
Reduced
PbOLead(II) oxide1
H2OWater3
Oxidized

Thermodynamic changes

Changes in standard condition (1)

Reaction of hydrogen and lead(II) chromate
3H2Gas + PbCrO4Crystalline solid
CrCrystalline solid + PbOCrystalline solidmassicot, yellow + 3H2OLiquid
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
−143.9
per 1 mol of
−47.97
per 1 mol of
−143.9
per 1 mol of
−143.9
per 1 mol of
−143.9
per 1 mol of
−47.97

Changes in standard condition (2)

Reaction of hydrogen and lead(II) chromate
3H2Gas + PbCrO4Crystalline solid
CrCrystalline solid + PbOCrystalline solidlitharge, red + 3H2OLiquid
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
−145.6
per 1 mol of
−48.53
per 1 mol of
−145.6
per 1 mol of
−145.6
per 1 mol of
−145.6
per 1 mol of
−48.53

Changes in aqueous solution

Reaction of hydrogen and lead(II) chromate
3H2Un-ionized aqueous solution + PbCrO4Crystalline solid
CrCrystalline solid + PbOCrystalline solidmassicot, yellow + 3H2OLiquid
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
−131.3
per 1 mol of
−43.77
per 1 mol of
−131.3
per 1 mol of
−131.3
per 1 mol of
−131.3
per 1 mol of
−43.77

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
H2 (g)0[1]0[1]130.684[1]28.824[1]
H2 (ao)-4.2[1]17.6[1]577[1]
PbCrO4 (cr)-930.9[1]
* (g):Gas, (ao):Un-ionized aqueous solution, (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
Cr (cr)0[1]0[1]23.77[1]23.35[1]
Cr (g)396.6[1]351.8[1]174.50[1]20.79[1]
PbO (cr)
massicot, yellow
-217.32[1]-187.89[1]68.70[1]45.77[1]
PbO (cr)
litharge, red
-218.99[1]-188.93[1]66.5[1]45.81[1]
PbO (cr)
1/3 hydrate
-266.5[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