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5H2S + 3Zn3(AsO4)2 ๐Ÿ”ฅโ†’ 5SO2 + 9Zn + 3As2O3 + 5H2O

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Reaction of hydrogen sulfide and zinc arsenate
5H2SHydrogen sulfide + 3Zn3(AsO4)2Zinc arsenate
๐Ÿ”ฅ
โŸถ
5SO2Sulfur dioxide + 9ZnZinc + 3As2O3Diarsenic trioxide + 5H2OWater

The reaction of hydrogen sulfide and zinc arsenate yields sulfur dioxide, zinc, diarsenic 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

Reaction of hydrogen sulfide and zinc arsenate
5H2SHydrogen sulfide + 3Zn3(AsO4)2Zinc arsenate
๐Ÿ”ฅ
โŸถ
5SO2Sulfur dioxide + 9ZnZinc + 3As2O3Diarsenic trioxide + 5H2OWater

General equation

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

Oxidation state of each atom

Reaction of hydrogen sulfide and zinc arsenate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
H2SHydrogen sulfide5
Reducing
Reducing
Zn3(AsO4)2Zinc arsenate3
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
SO2Sulfur dioxide5
Oxidized
โ€“
ZnZinc9
Reduced
โ€“
As2O3Diarsenic trioxide3
Reduced
โ€“
H2OWater5
โ€“
โ€“

Thermodynamic changes

Changes in standard condition (1)

Reaction of hydrogen sulfide and zinc arsenate
โ—†
ฮ”rG1438 kJ/mol
K0.12 ร— 10โˆ’251
pK251.93
5H2SGas + 3Zn3(AsO4)2Crystalline solid
๐Ÿ”ฅ
โŸถ
5SO2Gas + 9ZnCrystalline solid + 3As2O3Crystalline solidoctahedral + 5H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
โ€“1438โ€“โ€“
per 1 mol of
โ€“287.6โ€“โ€“
per 1 mol of
โ€“479.3โ€“โ€“
per 1 mol of
โ€“287.6โ€“โ€“
per 1 mol of
โ€“159.8โ€“โ€“
per 1 mol of
โ€“479.3โ€“โ€“
per 1 mol of
โ€“287.6โ€“โ€“

Changes in standard condition (2)

Reaction of hydrogen sulfide and zinc arsenate
โ—†
ฮ”rG1435 kJ/mol
K0.40 ร— 10โˆ’251
pK251.40
5H2SGas + 3Zn3(AsO4)2Crystalline solid
๐Ÿ”ฅ
โŸถ
5SO2Gas + 9ZnCrystalline solid + 3As2O3Crystalline solidmonoclinic + 5H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
โ€“1435โ€“โ€“
per 1 mol of
โ€“287.0โ€“โ€“
per 1 mol of
โ€“478.3โ€“โ€“
per 1 mol of
โ€“287.0โ€“โ€“
per 1 mol of
โ€“159.4โ€“โ€“
per 1 mol of
โ€“478.3โ€“โ€“
per 1 mol of
โ€“287.0โ€“โ€“

Changes in aqueous solution (1)

Reaction of hydrogen sulfide and zinc arsenate
5H2SUn-ionized aqueous solution + 3Zn3(AsO4)2Crystalline solid
๐Ÿ”ฅ
โŸถ
5SO2Gas + 9ZnCrystalline solid + 3As2O3Aqueous solution + 5H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“

Changes in aqueous solution (2)

Reaction of hydrogen sulfide and zinc arsenate
5H2SUn-ionized aqueous solution + 3Zn3(AsO4)2Crystalline solid
๐Ÿ”ฅ
โŸถ
5SO2Un-ionized aqueous solution + 9ZnCrystalline solid + 3As2O3Aqueous solution + 5H2OLiquid
Standard enthalpy
of reaction
ฮ”rHยฐ
kJ ยท molโˆ’1		Standard
Gibbs energy
of reaction
ฮ”rGยฐ
kJ ยท molโˆ’1		Standard entropy
of reaction
ฮ”rSยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard heat
capacity of reaction
at constant pressure
ฮ”rCpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
per 1 mol of
Equation
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“
per 1 mol of
โ€“โ€“โ€“โ€“

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’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]โ€“
Zn3(AsO4)2 (cr)โ€“-1895[1]โ€“โ€“
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ฮ”fHยฐ
kJ ยท molโˆ’1		Standard Gibbs
energy of
formation
ฮ”fGยฐ
kJ ยท molโˆ’1		Standard
molar entropy
Sยฐ
J ยท Kโˆ’1 ยท molโˆ’1		Standard molar
heat capacity at
constant pressure
Cpยฐ
J ยท Kโˆ’1 ยท molโˆ’1
SO2 (l)-320.5[1]โ€“โ€“โ€“
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]โ€“
Zn (cr)0[1]0[1]41.63[1]25.40[1]
Zn (g)130.729[1]95.145[1]160.984[1]20.786[1]
As2O3 (cr)
octahedral
-656.97[1]-576.22[1]107.1[1]95.65[1]
As2O3 (cr)
monoclinic
-654.8[1]-576.97[1]117[1]โ€“
As2O3 (g)-604.6[1]-548.9[1]191[1]โ€“
As2O3 (aq)-626.8[1]โ€“โ€“โ€“
H2O (cr)โ€“โ€“โ€“โ€“
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, (aq):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)