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2BaS + 2KMnO4 → 2BaMnO4 + S + K2S

The reaction of barium sulfide and potassium permanganate yields barium manganate, sulfur, and potassium 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

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
BaSBarium sulfide2
Reducing
Reducing
KMnO4Potassium permanganate2
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
BaMnO4Barium manganate2
Reduced
SSulfur1
Oxidized
K2SPotassium sulfide1

Thermodynamic changes

Changes in standard condition (1)

Reaction of barium sulfide and potassium permanganate
ΔrG−215 kJ/mol
K4.64 × 1037
pK−37.67
2BaSCrystalline solid + 2KMnO4Crystalline solid
2BaMnO4Crystalline solid + SCrystalline solidrhombic + K2SCrystalline solid
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
−215
per 1 mol of
−108
−108
per 1 mol of
−108
per 1 mol of
−215
per 1 mol of
−215

Changes in standard condition (2)

Reaction of barium sulfide and potassium permanganate
2BaSCrystalline solid + 2KMnO4Crystalline solid
2BaMnO4Crystalline solid + SCrystalline solidmonoclinic + K2SCrystalline solid
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

Changes in aqueous solution

Reaction of barium sulfide and potassium permanganate
2BaSAqueous solution + 2KMnO4Ionized aqueous solution
2BaMnO4Crystalline solid + SCrystalline solidrhombic + K2SIonized 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
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
BaS (cr)-460[1]-456[1]78.2[1]49.37[1]
BaS (g)50[1]
BaS (aq)-493.3[1]
KMnO4 (cr)-837.2[1]-737.6[1]171.71[1]117.57[1]
KMnO4 (ai)-793.8[1]-730.5[1]293.7[1]-60.2[1]
* (cr):Crystalline solid, (g):Gas, (aq):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
BaMnO4 (cr)-1119.2[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]
K2S (cr)-380.7[1]-364.0[1]105[1]
K2S (ai)-471.5[1]-480.7[1]190.4[1]
K2S (cr)
2 hydrate
-975.3[1]
K2S (cr)
5 hydrate
-1871.5[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution

References

List of references

  1. 1