You-iggy

3Hg + H2[PtCl6] → 3HgCl2 + Pt + H2

The reaction of mercury and hexachloridoplatinic(IV) acid yields mercury(II) chloride, platinum, and hydrogen (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 oxidizable species and oxidizing species
Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
HgMercury3
Reducing
Oxidizable
H2[PtCl6]Hexachloridoplatinic(IV) acid1
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
HgCl2Mercury(II) chloride3
Oxidized
PtPlatinum1
Reduced
H2Hydrogen1
Reduced

Thermodynamic changes

Changes in aqueous solution (1)

Reaction of mercury and hexachloridoplatinic(IV) acid
ΔrG−154.8 kJ/mol
K1.32 × 1027
pK−27.12
3HgUn-ionized aqueous solution + H2[PtCl6]Ionized aqueous solution
3HgCl2Un-ionized aqueous solution + PtCrystalline solid + H2Gas
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
−93.8−154.8205
per 1 mol of
−31.3−51.6068.3
−93.8−154.8205
−31.3−51.6068.3
per 1 mol of
−93.8−154.8205
per 1 mol of
−93.8−154.8205

Changes in aqueous solution (2)

Reaction of mercury and hexachloridoplatinic(IV) acid
ΔrG−137.2 kJ/mol
K1.09 × 1024
pK−24.04
3HgUn-ionized aqueous solution + H2[PtCl6]Ionized aqueous solution
3HgCl2Un-ionized aqueous solution + PtCrystalline solid + H2Un-ionized aqueous solution
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
−98.0−137.2651
per 1 mol of
−32.7−45.73217
−98.0−137.2651
−32.7−45.73217
per 1 mol of
−98.0−137.2651
per 1 mol of
−98.0−137.2651

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
Hg (cr)
Hg (l)0[1]0[1]76.02[1]27.983[1]
Hg (g)61.317[1]31.820[1]174.96[1]20.786[1]
Hg (ao)37.7[1]39.3[1]71[1]
H2[PtCl6] (ai)-668.2[1]-482.7[1]219.7[1]
H2[PtCl6] (cr)
6 hydrate
-2371.1[1]
* (cr):Crystalline solid, (l):Liquid, (g):Gas, (ao):Un-ionized aqueous solution, (ai):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
HgCl2 (cr)-224.3[1]-178.6[1]146.0[1]
HgCl2 (ao)-216.3[1]-173.2[1]155[1]
Pt (cr)0[1]0[1]41.63[1]25.86[1]
Pt (g)565.3[1]520.5[1]192.406[1]25.531[1]
H2 (g)0[1]0[1]130.684[1]28.824[1]
H2 (ao)-4.2[1]17.6[1]577[1]
* (cr):Crystalline solid, (ao):Un-ionized aqueous solution, (g):Gas

References

List of references

  1. 1