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5Sn + 4H3AsO4 → 5SnO2 + 4As + 6H2O

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Reaction of tin and arsenic acid
5SnTin + 4H3AsO4Arsenic acid
⟶
5SnO2Tin(IV) oxide + 4AsArsenic + 6H2OWater

The reaction of tin and arsenic acid yields tin(IV) oxide, arsenic, 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 tin and arsenic acid
5SnTin + 4H3AsO4Arsenic acid
⟶
5SnO2Tin(IV) oxide + 4AsArsenic + 6H2OWater

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 arsenic acid

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SnTin5
Reducing
Reducing
H3AsO4Arsenic acid4
Oxidizing
Reducible

Products

Chemical formulaNameCoefficientTypeType in general
equation
SnO2Tin(IV) oxide5
Oxidized
–
AsArsenic4
Reduced
–
H2OWater6
–
–

Thermodynamic changes

Changes in standard condition (1)

Reaction of tin and arsenic acid
5SnCrystalline solidwhite + 4H3AsO4Crystalline solid
⟶
5SnO2Crystalline solid + 4AsCrystalline solidα, gray, metallic + 6H2OLiquid
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
−993.3–––
per 1 mol of
−198.7–––
per 1 mol of
−248.3–––
per 1 mol of
−198.7–––
per 1 mol of
−248.3–––
per 1 mol of
−165.5–––

Changes in standard condition (2)

Reaction of tin and arsenic acid
5SnCrystalline solidwhite + 4H3AsO4Crystalline solid
⟶
5SnO2Crystalline solid + 4AsCrystalline solidγ, yellow, cubic + 6H2OLiquid
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
−934.9–––
per 1 mol of
−187.0–––
per 1 mol of
−233.7–––
per 1 mol of
−187.0–––
per 1 mol of
−233.7–––
per 1 mol of
−155.8–––

Changes in standard condition (3)

Reaction of tin and arsenic acid
5SnCrystalline solidwhite + 4H3AsO4Crystalline solid
⟶
5SnO2Crystalline solid + 4AsAmorphous solidβ + 6H2OLiquid
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
−976.5–––
per 1 mol of
−195.3–––
per 1 mol of
−244.1–––
per 1 mol of
−195.3–––
per 1 mol of
−244.1–––
per 1 mol of
−162.8–––

Changes in standard condition (4)

Reaction of tin and arsenic acid
5SnCrystalline solidgray + 4H3AsO4Crystalline solid
⟶
5SnO2Crystalline solid + 4AsCrystalline solidα, gray, metallic + 6H2OLiquid
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
−982.8–––
per 1 mol of
−196.6–––
per 1 mol of
−245.7–––
per 1 mol of
−196.6–––
per 1 mol of
−245.7–––
per 1 mol of
−163.8–––

Changes in standard condition (5)

Reaction of tin and arsenic acid
5SnCrystalline solidgray + 4H3AsO4Crystalline solid
⟶
5SnO2Crystalline solid + 4AsCrystalline solidγ, yellow, cubic + 6H2OLiquid
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
−924.4–––
per 1 mol of
−184.9–––
per 1 mol of
−231.1–––
per 1 mol of
−184.9–––
per 1 mol of
−231.1–––
per 1 mol of
−154.1–––

Changes in standard condition (6)

Reaction of tin and arsenic acid
5SnCrystalline solidgray + 4H3AsO4Crystalline solid
⟶
5SnO2Crystalline solid + 4AsAmorphous solidβ + 6H2OLiquid
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
−966.0–––
per 1 mol of
−193.2–––
per 1 mol of
−241.5–––
per 1 mol of
−193.2–––
per 1 mol of
−241.5–––
per 1 mol of
−161.0–––

Changes in aqueous solution (1)

Reaction of tin and arsenic acid
◆
ΔrG−956.8 kJ/mol
K4.21 × 10167
pK−167.62
5SnCrystalline solidwhite + 4H3AsO4Un-ionized aqueous solution
⟶
5SnO2Crystalline solid + 4AsCrystalline solidα, gray, metallic + 6H2OLiquid
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
−1008.5−956.8−172–
per 1 mol of
−201.70−191.4−34.4–
per 1 mol of
−252.13−239.2−43.0–
per 1 mol of
−201.70−191.4−34.4–
per 1 mol of
−252.13−239.2−43.0–
per 1 mol of
−168.08−159.5−28.7–

Changes in aqueous solution (2)

Reaction of tin and arsenic acid
5SnCrystalline solidwhite + 4H3AsO4Aqueous solution
⟶
5SnO2Crystalline solid + 4AsCrystalline solidα, gray, metallic + 6H2OLiquid
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
−1000.1–––
per 1 mol of
−200.02–––
per 1 mol of
−250.03–––
per 1 mol of
−200.02–––
per 1 mol of
−250.03–––
per 1 mol of
−166.68–––

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]
H3AsO4 (cr)-906.3[1]–––
H3AsO4 (ao)-902.5[1]-766.0[1]184[1]–
H3AsO4 (aq)-904.6[1]–––
* (cr):Crystalline solid, (g):Gas, (ao):Un-ionized aqueous solution, (aq):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
SnO2 (cr)-580.7[1]-519.6[1]52.3[1]52.59[1]
As (cr)
α, gray, metallic
0[1]0[1]35.1[1]24.64[1]
As (cr)
γ, yellow, cubic
14.6[1]–––
As (am)
β
4.2[1]–––
As (g)302.5[1]261.0[1]174.21[1]20.786[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]
* (cr):Crystalline solid, (am):Amorphous solid, (g):Gas, (l):Liquid

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)