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9Au + 6Hg(NO3)2 + 38H+ 🔥→ 9Au3+ + 3Hg22+ + 7NO↑ + 19H2O + 5NO2+

Reaction of gold and mercury(II) nitrate under acidic condition
9AuGold + 6Hg(NO3)2Mercury(II) nitrate + 38H+Hydrogen ion
🔥
9Au3+Gold(III) ion + 3Hg22+Dimercury(I) ion + 7NONitrogen monoxide + 19H2OWater + 5NO2+Nitronium ion

The reaction of gold, mercury(II) nitrate, and hydrogen ion yields gold(III) ion, dimercury(I) ion, nitrogen monoxide, water, and nitronium ion (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

Reaction of gold and mercury(II) nitrate under acidic condition
9AuGold + 6Hg(NO3)2Mercury(II) nitrate + 38H+Hydrogen ion
🔥
9Au3+Gold(III) ion + 3Hg22+Dimercury(I) ion + 7NONitrogen monoxide + 19H2OWater + 5NO2+Nitronium ion

General equation

Reaction of hardly oxidizable species and oxidizing species under acidic condition
Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent
ProductOxidation product + ProductReduction product + H2ONon-redox product

Oxidation state of each atom

Reaction of gold and mercury(II) nitrate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
AuGold9
Reducing
Hardly oxidizable
Hg(NO3)2Mercury(II) nitrate6
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion38
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
Au3+Gold(III) ion9
Oxidized
Hg22+Dimercury(I) ion3
Reduced
NONitrogen monoxide7
Reduced
H2OWater19
Water
NO2+Nitronium ion5

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
Au (cr)0[1]0[1]47.40[1]25.418[1]
Au (g)366.1[1]326.3[1]180.503[1]20.786[1]
Hg(NO3)2 (cr)
0.5 hydrate
-392.5[1]
H+ (g)1536.202[1]
H+ (ao)0[1]0[1]0[1]0[1]
* (cr):Crystalline solid, (g):Gas, (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
Au3+
Hg22+ (ao)172.4[1]153.52[1]84.5[1]
NO (g)90.25[1]86.55[1]210.761[1]29.844[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]
NO2+ (g)967.8[1]
* (ao):Un-ionized aqueous solution, (g):Gas, (cr):Crystalline solid, (l):Liquid

References

List of references

  1. 1