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4H2S + BaMnO4 → 2S + MnS + BaS + 4H2O

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Reaction of hydrogen sulfide and barium manganate
4H2SHydrogen sulfide + BaMnO4Barium manganate
⟶
2SSulfur + MnSManganese(II) sulfide + BaSBarium sulfide + 4H2OWater

The reaction of hydrogen sulfide and barium manganate yields sulfur, manganese(II) sulfide, barium sulfide, 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

Reaction of hydrogen sulfide and barium manganate
4H2SHydrogen sulfide + BaMnO4Barium manganate
⟶
2SSulfur + MnSManganese(II) sulfide + BaSBarium sulfide + 4H2OWater

General equation

Reaction of reducing species and oxidizing species
Reducing speciesReducing agent + Oxidizing speciesOxidizing agent
⟶
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of hydrogen sulfide and barium manganate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
H2SHydrogen sulfide4
Reducing
Reducing
BaMnO4Barium manganate1
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
SSulfur2
Oxidized
–
MnSManganese(II) sulfide1
Reduced
–
BaSBarium sulfide1
–
–
H2OWater4
–
–

Thermodynamic changes

Changes in standard condition (1)

Reaction of hydrogen sulfide and barium manganate
◆
ΔrG−369 kJ/mol
K4.43 × 1064
pK−64.65
4H2SGas + BaMnO4Crystalline solid
⟶
2SCrystalline solidrhombic + MnSCrystalline solidgreen + BaSCrystalline solid + 4H2OLiquid
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
–−369––
per 1 mol of
–−92.3––
per 1 mol of
–−369––
per 1 mol of
–−185––
–−369––
per 1 mol of
–−369––
per 1 mol of
–−92.3––

Changes in standard condition (2)

Reaction of hydrogen sulfide and barium manganate
4H2SGas + BaMnO4Crystalline solid
⟶
2SCrystalline solidrhombic + MnSAmorphous solidprecipitated, pink + BaSCrystalline solid + 4H2OLiquid
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
––––
per 1 mol of
––––
per 1 mol of
––––
per 1 mol of
––––
––––
per 1 mol of
––––
per 1 mol of
––––

Changes in standard condition (3)

Reaction of hydrogen sulfide and barium manganate
4H2SGas + BaMnO4Crystalline solid
⟶
2SCrystalline solidmonoclinic + MnSCrystalline solidgreen + BaSCrystalline solid + 4H2OLiquid
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
––––
per 1 mol of
––––
per 1 mol of
––––
per 1 mol of
––––
––––
per 1 mol of
––––
per 1 mol of
––––

Changes in standard condition (4)

Reaction of hydrogen sulfide and barium manganate
4H2SGas + BaMnO4Crystalline solid
⟶
2SCrystalline solidmonoclinic + MnSAmorphous solidprecipitated, pink + BaSCrystalline solid + 4H2OLiquid
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
––––
per 1 mol of
––––
per 1 mol of
––––
per 1 mol of
––––
––––
per 1 mol of
––––
per 1 mol of
––––

Changes in aqueous solution

Reaction of hydrogen sulfide and barium manganate
4H2SUn-ionized aqueous solution + BaMnO4Crystalline solid
⟶
2SCrystalline solidrhombic + MnSCrystalline solidgreen + BaSAqueous solution + 4H2OLiquid
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
––––
per 1 mol of
––––
per 1 mol of
––––
per 1 mol of
––––
––––
per 1 mol of
––––
per 1 mol of
––––

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]–
BaMnO4 (cr)–-1119.2[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
S (cr)
rhombic
0[1]0[1]31.80[1]22.64[1]
S (cr)
monoclinic
0.33[1]–––
S (g)278.805[1]238.250[1]167.821[1]23.673[1]
MnS (cr)
green
-214.2[1]-218.4[1]78.2[1]49.96[1]
MnS (am)
precipitated, pink
-213.8[1]–––
BaS (cr)-460[1]-456[1]78.2[1]49.37[1]
BaS (g)50[1]–––
BaS (aq)-493.3[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]
* (cr):Crystalline solid, (g):Gas, (am):Amorphous solid, (aq):Aqueous solution, (l):Liquid

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)