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5H2S + 6Cu(NO3)2 → 3Cu2SO3 + 2H2SO3 + 6N2O3 + 3H2O

The reaction of hydrogen sulfide and copper(II) nitrate yields copper(I) sulfite, sulfurous acid, dinitrogen trioxide, 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

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
H2SHydrogen sulfide5
Reducing
Reducing
Cu(NO3)2Copper(II) nitrate6
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
Cu2SO3Copper(I) sulfite3
Redoxed product
H2SO3Sulfurous acid2
Oxidized
N2O3Dinitrogen trioxide6
Reduced
H2OWater3

Thermodynamic changes

Changes in aqueous solution

Reaction of hydrogen sulfide and copper(II) nitrate
ΔrG−1028.8 kJ/mol
K1.73 × 10180
pK−180.24
5H2SUn-ionized aqueous solution + 6Cu(NO3)2Ionized aqueous solution
3Cu2SO3Ionized aqueous solution + 2H2SO3Un-ionized aqueous solution + 6N2O3Gas + 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
−750.6−1028.8933
per 1 mol of
−150.1−205.76187
per 1 mol of
−125.1−171.47156
per 1 mol of
−250.2−342.93311
per 1 mol of
−375.3−514.40467
−125.1−171.47156
per 1 mol of
−250.2−342.93311

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
H2S (g)-20.63[1]-33.56[1]205.79[1]34.23[1]
H2S (ao)-39.7[1]-27.83[1]121[1]
Cu(NO3)2 (cr)-302.9[1]
Cu(NO3)2 (ai)-349.95[1]-157.02[1]193.3[1]
Cu(NO3)2 (cr)
3 hydrate
-1217.1[1]
Cu(NO3)2 (cr)
6 hydrate
-2110.8[1]
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (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
Cu2SO3 (ai)-492.0[1]-386.6[1]50[1]
H2SO3 (ao)-608.81[1]-537.81[1]232.2[1]
N2O3 (l)50.29[1]
N2O3 (g)83.72[1]139.46[1]312.28[1]65.61[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]
* (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas, (cr):Crystalline solid

References

List of references

  1. 1