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3BaI2 + 3Cl2 + 3H2O → 3BaCl2 + HIO3 + 5HI

The reaction of barium iodide, chlorine, and water yields barium chloride, iodic acid, and hydrogen iodide (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 oxidizable species and oxidizing species under neutral condition
Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H2ONon-redox agent
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of barium iodide and chlorine under neutral condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
BaI2Barium iodide3
Reducing
Oxidizable
Cl2Chlorine3
Oxidizing
Oxidizing
H2OWater3
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
BaCl2Barium chloride3
Reduced
HIO3Iodic acid1
Oxidized
HIHydrogen iodide5

Thermodynamic changes

Changes in standard condition

Reaction of barium iodide and chlorine under neutral condition
3BaI2Crystalline solid + 3Cl2Gas + 3H2OLiquid
3BaCl2Crystalline solid + HIO3Crystalline solid + 5HIGas
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
−9.7
per 1 mol of
−3.2
per 1 mol of
−3.2
per 1 mol of
−3.2
per 1 mol of
−3.2
per 1 mol of
−9.7
per 1 mol of
−1.9

Changes in aqueous solution (1)

Reaction of barium iodide and chlorine under neutral condition
ΔrG88.6 kJ/mol
K0.30 × 10−15
pK15.52
3BaI2Ionized aqueous solution + 3Cl2Un-ionized aqueous solution + 3H2OLiquid
3BaCl2Ionized aqueous solution + HIO3Un-ionized aqueous solution + 5HIGas
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
177.088.6298
per 1 mol of
59.0029.599.3
per 1 mol of
59.0029.599.3
per 1 mol of
59.0029.599.3
per 1 mol of
59.0029.599.3
per 1 mol of
177.088.6298
per 1 mol of
35.4017.759.6

Changes in aqueous solution (2)

Reaction of barium iodide and chlorine under neutral condition
ΔrG−177.8 kJ/mol
K1.41 × 1031
pK−31.15
3BaI2Ionized aqueous solution + 3Cl2Un-ionized aqueous solution + 3H2OLiquid
3BaCl2Ionized aqueous solution + HIO3Un-ionized aqueous solution + 5HIIonized 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
−231.4−177.8−178
per 1 mol of
−77.13−59.27−59.3
per 1 mol of
−77.13−59.27−59.3
per 1 mol of
−77.13−59.27−59.3
per 1 mol of
−77.13−59.27−59.3
per 1 mol of
−231.4−177.8−178
per 1 mol of
−46.28−35.56−35.6

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
BaI2 (cr)-602.1[1]
BaI2 (g)-326[1]-377[1]343[1]61.5[1]
BaI2 (ai)-648.02[1]-663.92[1]232.2[1]
BaI2 (cr)
1 hydrate
-919.2[1]
BaI2 (cr)
2 hydrate
-1216.7[1]
BaI2 (cr)
2.5 hydrate
-1363.6[1]
BaI2 (cr)
7 hydrate
-2676.5[1]
Cl2 (g)0[1]0[1]223.066[1]33.907[1]
Cl2 (ao)-23.4[1]6.94[1]121[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, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (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
BaCl2 (cr)-858.6[1]-810.4[1]123.68[1]75.14[1]
BaCl2 (g)-525.9[1]-537.6[1]325.29[1]56.19[1]
BaCl2 (ai)-871.95[1]-823.21[1]122.6[1]
BaCl2 (cr)
1 hydrate
-1160.6[1]-1055.63[1]166.9[1]
BaCl2 (cr)
2 hydrate
-1460.13[1]-1296.32[1]202.9[1]161.96[1]
HIO3 (cr)-230.1[1]
HIO3 (ao)-211.3[1]-132.6[1]166.9[1]
HI (g)26.48[1]1.70[1]206.594[1]29.158[1]
HI (ai)-55.19[1]-51.57[1]111.3[1]-142.3[1]
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-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)