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6KI + 6AgNO3 + 3H2O ๐Ÿ”ฅโ†’ 6KNO3 + HIO3 + 6Ag + 5HIโ†‘

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Reaction of potassium iodide and silver(I) nitrate under neutral condition
6KIPotassium iodide + 6AgNO3Silver(I) nitrate + 3H2OWater
๐Ÿ”ฅ
โŸถ
6KNO3Potassium nitrate + HIO3Iodic acid + 6AgSilver + 5HIโ†‘Hydrogen iodide

The reaction of potassium iodide, silver(I) nitrate, and water yields potassium nitrate, iodic acid, silver, 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

Reaction of potassium iodide and silver(I) nitrate under neutral condition
6KIPotassium iodide + 6AgNO3Silver(I) nitrate + 3H2OWater
๐Ÿ”ฅ
โŸถ
6KNO3Potassium nitrate + HIO3Iodic acid + 6AgSilver + 5HIโ†‘Hydrogen iodide

General equation

Reaction of oxidizable species and oxidizing species under neutral condition
Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H2ONon-redox agent
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of potassium iodide and silver(I) nitrate under neutral condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
KIPotassium iodide6
Reducing
Oxidizable
AgNO3Silver(I) nitrate6
Oxidizing
Oxidizing
H2OWater3
โ€“
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
KNO3Potassium nitrate6
โ€“
โ€“
HIO3Iodic acid1
Oxidized
โ€“
AgSilver6
Reduced
โ€“
HIHydrogen iodide5
โ€“
โ€“

Thermodynamic changes

Changes in standard condition

Reaction of potassium iodide and silver(I) nitrate under neutral condition
6KICrystalline solid + 6AgNO3Crystalline solid + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
6KNO3Crystalline solid + HIO3Crystalline solid + 6AgCrystalline solid + 5HIโ†‘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
505.8โ€“โ€“โ€“
per 1 mol of
84.30โ€“โ€“โ€“
per 1 mol of
84.30โ€“โ€“โ€“
per 1 mol of
168.6โ€“โ€“โ€“
per 1 mol of
84.30โ€“โ€“โ€“
per 1 mol of
505.8โ€“โ€“โ€“
per 1 mol of
84.30โ€“โ€“โ€“
per 1 mol of
101.2โ€“โ€“โ€“

Changes in aqueous solution (1)

Reaction of potassium iodide and silver(I) nitrate under neutral condition
โ—†
ฮ”rG434.2 kJ/mol
K0.85 ร— 10โˆ’76
pK76.07
6KIIonized aqueous solution + 6AgNO3Ionized aqueous solution + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
6KNO3Ionized aqueous solution + HIO3Un-ionized aqueous solution + 6AgCrystalline solid + 5HIโ†‘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
476.4434.2140.8โ€“
per 1 mol of
79.4072.3723.47โ€“
per 1 mol of
79.4072.3723.47โ€“
per 1 mol of
158.8144.746.93โ€“
per 1 mol of
79.4072.3723.47โ€“
per 1 mol of
476.4434.2140.8โ€“
per 1 mol of
79.4072.3723.47โ€“
per 1 mol of
95.2886.8428.16โ€“

Changes in aqueous solution (2)

Reaction of potassium iodide and silver(I) nitrate under neutral condition
โ—†
ฮ”rG167.8 kJ/mol
K0.40 ร— 10โˆ’29
pK29.40
6KIIonized aqueous solution + 6AgNO3Ionized aqueous solution + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
6KNO3Ionized aqueous solution + HIO3Un-ionized aqueous solution + 6AgCrystalline solid + 5HIโ†‘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
68.0167.8โˆ’335.6โ€“
per 1 mol of
11.327.97โˆ’55.93โ€“
per 1 mol of
11.327.97โˆ’55.93โ€“
per 1 mol of
22.755.93โˆ’111.9โ€“
per 1 mol of
11.327.97โˆ’55.93โ€“
per 1 mol of
68.0167.8โˆ’335.6โ€“
per 1 mol of
11.327.97โˆ’55.93โ€“
per 1 mol of
13.633.56โˆ’67.12โ€“

Changes in aqueous solution (3)

Reaction of potassium iodide and silver(I) nitrate under neutral condition
โ—†
ฮ”rG424.1 kJ/mol
K0.50 ร— 10โˆ’74
pK74.30
6KIIonized aqueous solution + 6AgNO3Un-ionized aqueous solution + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
6KNO3Ionized aqueous solution + HIO3Un-ionized aqueous solution + 6AgCrystalline solid + 5HIโ†‘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
โ€“424.1โ€“โ€“
per 1 mol of
โ€“70.68โ€“โ€“
per 1 mol of
โ€“70.68โ€“โ€“
per 1 mol of
โ€“141.4โ€“โ€“
per 1 mol of
โ€“70.68โ€“โ€“
per 1 mol of
โ€“424.1โ€“โ€“
per 1 mol of
โ€“70.68โ€“โ€“
per 1 mol of
โ€“84.82โ€“โ€“

Changes in aqueous solution (4)

Reaction of potassium iodide and silver(I) nitrate under neutral condition
โ—†
ฮ”rG157.8 kJ/mol
K0.23 ร— 10โˆ’27
pK27.65
6KIIonized aqueous solution + 6AgNO3Un-ionized aqueous solution + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
6KNO3Ionized aqueous solution + HIO3Un-ionized aqueous solution + 6AgCrystalline solid + 5HIโ†‘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
โ€“157.8โ€“โ€“
per 1 mol of
โ€“26.30โ€“โ€“
per 1 mol of
โ€“26.30โ€“โ€“
per 1 mol of
โ€“52.60โ€“โ€“
per 1 mol of
โ€“26.30โ€“โ€“
per 1 mol of
โ€“157.8โ€“โ€“
per 1 mol of
โ€“26.30โ€“โ€“
per 1 mol of
โ€“31.56โ€“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
KI (cr)-327.900[1]-324.892[1]106.32[1]52.93[1]
KI (g)-125.5[1]-166.1[1]258.3[1]37.11[1]
KI (ai)-307.57[1]-334.85[1]213.8[1]-120.5[1]
AgNO3 (cr)-124.39[1]-33.41[1]140.92[1]93.05[1]
AgNO3 (ai)-101.80[1]-34.16[1]219.2[1]-64.9[1]
AgNO3 (ao)โ€“-32.49[1]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, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid

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
KNO3 (cr)-494.63[1]-394.86[1]133.05[1]96.40[1]
KNO3 (ai)-459.74[1]-394.53[1]248.9[1]-64.9[1]
HIO3 (cr)-230.1[1]โ€“โ€“โ€“
HIO3 (ao)-211.3[1]-132.6[1]166.9[1]โ€“
Ag (cr)0[1]0[1]42.55[1]25.351[1]
Ag (g)284.55[1]245.65[1]172.997[1]20.786[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, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (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)