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2SnI2 + 14HNO3 → 2SnO2 + 4HIO3 + 7N2O3↑ + 5H2O

The reaction of tin(II) iodide and nitric acid yields tin(IV) oxide, iodic acid, dinitrogen 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

General equation

Reaction of reducing species and oxidizing species
Reducing speciesReducing agent + Oxidizing speciesOxidizing agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of tin(II) iodide and nitric acid

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SnI2Tin(II) iodide2
Reducing
Reducing
HNO3Nitric acid14
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
SnO2Tin(IV) oxide2
Oxidized
HIO3Iodic acid4
Oxidized
N2O3Dinitrogen trioxide7
Reduced
H2OWater5

Thermodynamic changes

Changes in standard condition

Reaction of tin(II) iodide and nitric acid
2SnI2Crystalline solid + 14HNO3Liquid
2SnO2Crystalline solid + 4HIO3Crystalline solid + 7N2O3Gas + 5H2OLiquid
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
−200.5
per 1 mol of
−100.3
per 1 mol of
−14.32
per 1 mol of
−100.3
per 1 mol of
−50.13
−28.64
per 1 mol of
−40.10

Changes in aqueous solution

Reaction of tin(II) iodide and nitric acid
2SnI2Crystalline solid + 14HNO3Ionized aqueous solution
2SnO2Crystalline solid + 4HIO3Un-ionized aqueous solution + 7N2O3Gas + 5H2OLiquid
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
340.3
per 1 mol of
170.2
per 1 mol of
24.31
per 1 mol of
170.2
per 1 mol of
85.08
48.61
per 1 mol of
68.06

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
SnI2 (cr)-143.5[1]
HNO3 (l)-174.10[1]-80.71[1]155.60[1]109.87[1]
HNO3 (g)-135.06[1]-74.72[1]266.38[1]53.35[1]
HNO3 (ai)-207.36[1]-111.25[1]146.4[1]-86.6[1]
HNO3 (l)
1 hydrate
-473.46[1]-328.77[1]216.90[1]182.46[1]
HNO3 (l)
3 hydrate
-1056.04[1]-811.09[1]346.98[1]325.14[1]
* (cr):Crystalline solid, (l):Liquid, (g):Gas, (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
SnO2 (cr)-580.7[1]-519.6[1]52.3[1]52.59[1]
HIO3 (cr)-230.1[1]
HIO3 (ao)-211.3[1]-132.6[1]166.9[1]
N2O3 (l)50.29[1]
N2O3 (g)83.72[1]139.46[1]312.28[1]65.61[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, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas

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)