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H2 + CuS 🔥→ Cu + H2S

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Reaction of hydrogen and copper(II) sulfide
H2Hydrogen + CuSCopper(II) sulfide
🔥
⟶
CuCopper + H2SHydrogen sulfide

The reaction of hydrogen and copper(II) sulfide yields copper and hydrogen sulfide (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 hydrogen and copper(II) sulfide
H2Hydrogen + CuSCopper(II) sulfide
🔥
⟶
CuCopper + H2SHydrogen sulfide

General equation

Reaction of reducing species and reducible species
Reducing speciesReducing agent + Reducible speciesOxidizing agent
⟶
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of hydrogen and copper(II) sulfide

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
H2Hydrogen1
Reducing
Reducing
CuSCopper(II) sulfide1
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
CuCopper1
Reduced
–
H2SHydrogen sulfide1
Oxidized
–

Thermodynamic changes

Changes in standard condition

Reaction of hydrogen and copper(II) sulfide
◆
ΔrG20.0 kJ/mol
K0.31 × 10−3
pK3.50
H2Gas + CuSCrystalline solid
🔥
⟶
CuCrystalline solid + H2SGas
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
32.520.041.8−17.98
per 1 mol of
32.520.041.8−17.98
per 1 mol of
32.520.041.8−17.98
per 1 mol of
32.520.041.8−17.98
per 1 mol of
32.520.041.8−17.98

Changes in aqueous solution (1)

Reaction of hydrogen and copper(II) sulfide
◆
ΔrG2.4 kJ/mol
K0.38 × 100
pK0.42
H2Un-ionized aqueous solution + CuSCrystalline solid
🔥
⟶
CuCrystalline solid + H2SGas
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
36.72.4−405–
per 1 mol of
36.72.4−405–
per 1 mol of
36.72.4−405–
per 1 mol of
36.72.4−405–
per 1 mol of
36.72.4−405–

Changes in aqueous solution (2)

Reaction of hydrogen and copper(II) sulfide
◆
ΔrG8.2 kJ/mol
K0.37 × 10−1
pK1.44
H2Un-ionized aqueous solution + CuSCrystalline solid
🔥
⟶
CuCrystalline solid + H2SUn-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
17.68.2−489–
per 1 mol of
17.68.2−489–
per 1 mol of
17.68.2−489–
per 1 mol of
17.68.2−489–
per 1 mol of
17.68.2−489–

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]–
CuS (cr)-53.1[1]-53.6[1]66.5[1]47.82[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
Cu (cr)0[1]0[1]33.150[1]24.435[1]
Cu (g)338.32[1]298.58[1]166.38[1]20.786[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]–
* (cr):Crystalline solid, (g):Gas, (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)