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PbI+ + [PbI3] → 2PbI2

Reaction of lead(II) iodide ion and triiodidoplumbate(II) ion
PbI+Lead(II) iodide ion + [PbI3]Triiodidoplumbate(II) ion
2PbI2Lead(II) iodide

The reaction of lead(II) iodide ion and triiodidoplumbate(II) ion yields lead(II) iodide. This reaction is an acid-base reaction and is classified as follows:

Table of contents
  1. 1Reaction data
  2. 2Thermodynamic changes
  3. 3References
  4. 4Related categories

Reaction data

Chemical equation

Reaction of lead(II) iodide ion and triiodidoplumbate(II) ion
PbI+Lead(II) iodide ion + [PbI3]Triiodidoplumbate(II) ion
2PbI2Lead(II) iodide

General equation

Reaction of cation and anion
CationLewis acid + AnionLewis base
ProductLewis conjugate + (H2O)

Oxidation state of each atom

Reaction of lead(II) iodide ion and triiodidoplumbate(II) ion

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
PbI+Lead(II) iodide ion1
Lewis acid
Cation
[PbI3]Triiodidoplumbate(II) ion1
Lewis base
Anion

Products

Chemical formulaNameCoefficientTypeType in general
equation
PbI2Lead(II) iodide2
Lewis conjugate
Very slightly soluble in water

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
PbI+ (ao)-87.0[1]
[PbI3]
* (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
PbI2 (cr)-175.48[1]-173.64[1]174.85[1]77.36[1]
PbI2 (ai)-112.1[1]-127.57[1]233.0[1]
PbI2 (ao)-143.5[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution

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)