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7H2S + 6CsClO4 → 4SO2 + 6HClO2 + 3Cs2S + 4H2O

The reaction of hydrogen sulfide and caesium perchlorate yields sulfur dioxide, chlorous acid, caesium 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

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 sulfide7
Reducing
Reducing
CsClO4Caesium perchlorate6
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
SO2Sulfur dioxide4
Oxidized
HClO2Chlorous acid6
Reduced
Cs2SCaesium sulfide3
H2OWater4

Thermodynamic changes

Changes in standard condition (1)

Reaction of hydrogen sulfide and caesium perchlorate
ΔrG−1610.7 kJ/mol
K1.52 × 10282
pK−282.18
7H2SUn-ionized aqueous solution + 6CsClO4Ionized aqueous solution
4SO2Gas + 6HClO2Un-ionized aqueous solution + 3Cs2SIonized aqueous 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
−1489.6−1610.7419
per 1 mol of
−212.80−230.1059.9
−248.27−268.4569.8
per 1 mol of
−372.40−402.68105
per 1 mol of
−248.27−268.4569.8
per 1 mol of
−496.53−536.90140
per 1 mol of
−372.40−402.68105

Changes in standard condition (2)

Reaction of hydrogen sulfide and caesium perchlorate
ΔrG−1612.7 kJ/mol
K3.41 × 10282
pK−282.53
7H2SUn-ionized aqueous solution + 6CsClO4Ionized aqueous solution
4SO2Un-ionized aqueous solution + 6HClO2Un-ionized aqueous solution + 3Cs2SIonized aqueous 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
−1594.2−1612.774
per 1 mol of
−227.74−230.3911
−265.70−268.7812
per 1 mol of
−398.55−403.1819
per 1 mol of
−265.70−268.7812
per 1 mol of
−531.40−537.5725
per 1 mol of
−398.55−403.1819

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]
CsClO4 (cr)-443.09[1]-314.26[1]175.06[1]108.28[1]
CsClO4 (ai)-387.61[1]-300.54[1]315.1[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
SO2 (l)-320.5[1]
SO2 (g)-296.830[1]-300.194[1]248.22[1]39.87[1]
SO2 (ao)-322.980[1]-300.676[1]161.9[1]
HClO2 (ao)-51.9[1]5.9[1]188.3[1]
Cs2S (cr)-359.8[1]
Cs2S (ai)-483.7[1]-498.3[1]251.5[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]
* (l):Liquid, (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (ai):Ionized aqueous solution

References

List of references

  1. 1