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Sn + 2SO3 → SnO2 + 2SO2

The reaction of tin and sulfur trioxide yields tin(IV) oxide and sulfur dioxide (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 reducible species
Reducing speciesReducing agent + Reducible speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of tin and sulfur trioxide

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SnTin1
Reducing
Reducing
SO3Sulfur trioxide2
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
SnO2Tin(IV) oxide1
Oxidized
SO2Sulfur dioxide2
Reduced

Thermodynamic changes

Changes in standard condition (1)

Reaction of tin and sulfur trioxide
ΔrG−372.5 kJ/mol
K1.82 × 1065
pK−65.26
SnCrystalline solidwhite + 2SO3Liquid
SnO2Crystalline solid + 2SO2Gas
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
−292.3−372.5269.6
per 1 mol of
−292.3−372.5269.6
per 1 mol of
−146.2−186.3134.8
per 1 mol of
−292.3−372.5269.6
per 1 mol of
−146.2−186.3134.8

Changes in standard condition (2)

Reaction of tin and sulfur trioxide
ΔrG−372.6 kJ/mol
K1.89 × 1065
pK−65.28
SnCrystalline solidgray + 2SO3Liquid
SnO2Crystalline solid + 2SO2Gas
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
−290.2−372.6277.0
per 1 mol of
−290.2−372.6277.0
per 1 mol of
−145.1−186.3138.5
per 1 mol of
−290.2−372.6277.0
per 1 mol of
−145.1−186.3138.5

Changes in aqueous solution (1)

Reaction of tin and sulfur trioxide
ΔrG−371.6 kJ/mol
K1.26 × 1065
pK−65.10
SnCrystalline solidwhite + 2SO3Crystalline solidβ
SnO2Crystalline solid + 2SO2Gas
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
−265.3−371.6355.8
per 1 mol of
−265.3−371.6355.8
per 1 mol of
−132.7−185.8177.9
per 1 mol of
−265.3−371.6355.8
per 1 mol of
−132.7−185.8177.9

Changes in aqueous solution (2)

Reaction of tin and sulfur trioxide
ΔrG−372.5 kJ/mol
K1.82 × 1065
pK−65.26
SnCrystalline solidwhite + 2SO3Crystalline solidβ
SnO2Crystalline solid + 2SO2Un-ionized 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
−317.6−372.5183.2
per 1 mol of
−317.6−372.5183.2
per 1 mol of
−158.8−186.391.60
per 1 mol of
−317.6−372.5183.2
per 1 mol of
−158.8−186.391.60

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
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]
SO3 (cr)
β
-454.51[1]-374.21[1]70.7[1]
SO3 (l)-441.04[1]-373.75[1]113.8[1]
SO3 (g)-395.72[1]-371.06[1]256.76[1]50.67[1]
* (cr):Crystalline solid, (g):Gas, (l):Liquid

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
SnO2 (cr)-580.7[1]-519.6[1]52.3[1]52.59[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]
* (cr):Crystalline solid, (l):Liquid, (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

  1. 1