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2SnBr2 + 2H2O ๐Ÿ’งโšกโ†’ 2Sn + O2โ†‘ + 4HBrโ†‘

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Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Tin(II) bromide + 2H2OWater
๐Ÿ’งโšก
โŸถ
2SnTin + O2โ†‘Oxygen + 4HBrโ†‘Hydrogen bromide

Electrolysis of aqueous tin(II) bromide yields tin, oxygen, and hydrogen bromide (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

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Tin(II) bromide + 2H2OWater
๐Ÿ’งโšก
โŸถ
2SnTin + O2โ†‘Oxygen + 4HBrโ†‘Hydrogen bromide

General equation

Electrolysis of aqueous solution with water as reducing agent
Miscible with water/Very soluble in water/Soluble in waterOxidizing agent + H2OReducing agent
๐Ÿ’งโšก
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Electrolysis of aqueous tin(II) bromide with water as reducing agent

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SnBr2Tin(II) bromide2
Oxidizing
Very soluble in water
H2OWater2
Reducing
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
SnTin2
Reduced
โ€“
O2Oxygen1
Oxidized
โ€“
HBrHydrogen bromide4
โ€“
โ€“

Thermodynamic changes

Changes in standard condition (1)

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Crystalline solid + 2H2OLiquid
๐Ÿ’งโšก
โŸถ
2SnCrystalline solidwhite + O2โ†‘Gas + 4HBrโ†‘Gas
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
913.1โ€“โ€“โ€“
per 1 mol of
456.6โ€“โ€“โ€“
per 1 mol of
456.6โ€“โ€“โ€“
per 1 mol of
456.6โ€“โ€“โ€“
per 1 mol of
913.1โ€“โ€“โ€“
per 1 mol of
228.3โ€“โ€“โ€“

Changes in standard condition (2)

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Crystalline solid + 2H2OLiquid
๐Ÿ’งโšก
โŸถ
2SnCrystalline solidgray + O2โ†‘Gas + 4HBrโ†‘Gas
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
908.9โ€“โ€“โ€“
per 1 mol of
454.4โ€“โ€“โ€“
per 1 mol of
454.4โ€“โ€“โ€“
per 1 mol of
454.4โ€“โ€“โ€“
per 1 mol of
908.9โ€“โ€“โ€“
per 1 mol of
227.2โ€“โ€“โ€“

Changes in aqueous solution (1)

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Crystalline solid + 2H2OLiquid
๐Ÿ’งโšก
โŸถ
2SnCrystalline solidwhite + O2โ†‘Gas + 4HBrโ†‘Gas
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
913.1โ€“โ€“โ€“
per 1 mol of
456.6โ€“โ€“โ€“
per 1 mol of
456.6โ€“โ€“โ€“
per 1 mol of
456.6โ€“โ€“โ€“
per 1 mol of
913.1โ€“โ€“โ€“
per 1 mol of
228.3โ€“โ€“โ€“

Changes in aqueous solution (2)

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Crystalline solid + 2H2OLiquid
๐Ÿ’งโšก
โŸถ
2SnCrystalline solidwhite + O2โ†‘Gas + 4HBrโ†‘Ionized aqueous solution
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
572.5โ€“โ€“โ€“
per 1 mol of
286.3โ€“โ€“โ€“
per 1 mol of
286.3โ€“โ€“โ€“
per 1 mol of
286.3โ€“โ€“โ€“
per 1 mol of
572.5โ€“โ€“โ€“
per 1 mol of
143.1โ€“โ€“โ€“

Changes in aqueous solution (3)

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Crystalline solid + 2H2OLiquid
๐Ÿ’งโšก
โŸถ
2SnCrystalline solidwhite + O2โ†‘Un-ionized aqueous solution + 4HBrโ†‘Gas
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
901.4โ€“โ€“โ€“
per 1 mol of
450.7โ€“โ€“โ€“
per 1 mol of
450.7โ€“โ€“โ€“
per 1 mol of
450.7โ€“โ€“โ€“
per 1 mol of
901.4โ€“โ€“โ€“
per 1 mol of
225.3โ€“โ€“โ€“

Changes in aqueous solution (4)

Electrolysis of aqueous tin(II) bromide with water as reducing agent
2SnBr2Crystalline solid + 2H2OLiquid
๐Ÿ’งโšก
โŸถ
2SnCrystalline solidwhite + O2โ†‘Un-ionized aqueous solution + 4HBrโ†‘Ionized aqueous solution
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
560.8โ€“โ€“โ€“
per 1 mol of
280.4โ€“โ€“โ€“
per 1 mol of
280.4โ€“โ€“โ€“
per 1 mol of
280.4โ€“โ€“โ€“
per 1 mol of
560.8โ€“โ€“โ€“
per 1 mol of
140.2โ€“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
SnBr2 (cr)-243.5[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]
* (cr):Crystalline solid, (l):Liquid, (g):Gas

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
Sn (cr)
white
0[1]0[1]51.55[1]26.99[1]
Sn (cr)
gray
-2.09[1]0.13[1]44.14[1]25.77[1]
Sn (g)302.1[1]267.3[1]168.486[1]21.259[1]
O2 (g)0[1]0[1]205.138[1]29.355[1]
O2 (ao)-11.7[1]16.4[1]110.9[1]โ€“
HBr (g)-36.40[1]-53.45[1]198.695[1]29.142[1]
HBr (ai)-121.55[1]-103.96[1]82.4[1]-141.8[1]
* (cr):Crystalline solid, (g):Gas, (ao):Un-ionized aqueous solution, (ai):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)