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13NaI + 6KMnO4 + 3H2O ๐Ÿ”ฅโ†’ NaIO3 + 6Na2MnO4 + 6KI + 6HIโ†‘

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Reaction of sodium iodide and potassium permanganate under neutral condition
13NaISodium iodide + 6KMnO4Potassium permanganate + 3H2OWater
๐Ÿ”ฅ
โŸถ
NaIO3Sodium iodate + 6Na2MnO4Sodium manganate + 6KIPotassium iodide + 6HIโ†‘Hydrogen iodide

The reaction of sodium iodide, potassium permanganate, and water yields sodium iodate, sodium manganate, potassium iodide, 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 sodium iodide and potassium permanganate under neutral condition
13NaISodium iodide + 6KMnO4Potassium permanganate + 3H2OWater
๐Ÿ”ฅ
โŸถ
NaIO3Sodium iodate + 6Na2MnO4Sodium manganate + 6KIPotassium iodide + 6HIโ†‘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 sodium iodide and potassium permanganate under neutral condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
NaISodium iodide13
Reducing
Oxidizable
KMnO4Potassium permanganate6
Oxidizing
Oxidizing
H2OWater3
โ€“
Water

Products

Chemical formulaNameCoefficientTypeType in general
equation
NaIO3Sodium iodate1
Oxidized
โ€“
Na2MnO4Sodium manganate6
Reduced
โ€“
KIPotassium iodide6
โ€“
โ€“
HIHydrogen iodide6
โ€“
โ€“

Thermodynamic changes

Changes in standard condition

Reaction of sodium iodide and potassium permanganate under neutral condition
13NaICrystalline solid + 6KMnO4Crystalline solid + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
NaIO3Crystalline solid + 6Na2MnO4Crystalline solid + 6KICrystalline solid + 6HIโ†‘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
395.5โ€“โ€“โ€“
per 1 mol of
30.42โ€“โ€“โ€“
65.92โ€“โ€“โ€“
per 1 mol of
131.8โ€“โ€“โ€“
per 1 mol of
395.5โ€“โ€“โ€“
per 1 mol of
65.92โ€“โ€“โ€“
per 1 mol of
65.92โ€“โ€“โ€“
per 1 mol of
65.92โ€“โ€“โ€“

Changes in aqueous solution (1)

Reaction of sodium iodide and potassium permanganate under neutral condition
โ—†
ฮ”rG633.1 kJ/mol
K0.12 ร— 10โˆ’110
pK110.91
13NaIIonized aqueous solution + 6KMnO4Ionized aqueous solution + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
NaIO3Ionized aqueous solution + 6Na2MnO4Ionized aqueous solution + 6KIIonized aqueous solution + 6HIโ†‘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
507633.1โˆ’430โ€“
per 1 mol of
39.048.70โˆ’33.1โ€“
84.5105.5โˆ’71.7โ€“
per 1 mol of
169211.0โˆ’143โ€“
per 1 mol of
507633.1โˆ’430โ€“
per 1 mol of
84.5105.5โˆ’71.7โ€“
per 1 mol of
84.5105.5โˆ’71.7โ€“
per 1 mol of
84.5105.5โˆ’71.7โ€“

Changes in aqueous solution (2)

Reaction of sodium iodide and potassium permanganate under neutral condition
โ—†
ฮ”rG313.5 kJ/mol
K0.12 ร— 10โˆ’54
pK54.92
13NaIIonized aqueous solution + 6KMnO4Ionized aqueous solution + 3H2OLiquid
๐Ÿ”ฅ
โŸถ
NaIO3Ionized aqueous solution + 6Na2MnO4Ionized aqueous solution + 6KIIonized aqueous solution + 6HIโ†‘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
17313.5โˆ’1002โ€“
per 1 mol of
1.324.12โˆ’77.08โ€“
2.852.25โˆ’167.0โ€“
per 1 mol of
5.7104.5โˆ’334.0โ€“
per 1 mol of
17313.5โˆ’1002โ€“
per 1 mol of
2.852.25โˆ’167.0โ€“
per 1 mol of
2.852.25โˆ’167.0โ€“
per 1 mol of
2.852.25โˆ’167.0โ€“

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
NaI (cr)-287.78[1]-286.06[1]98.53[1]52.09[1]
NaI (g)-79.5[1]-121.0[1]248.978[1]36.65[1]
NaI (ai)-295.31[1]-313.47[1]170.3[1]-95.8[1]
NaI (cr)
1 hydrate
-883.096[1]-771.10[1]196.2[1]โ€“
KMnO4 (cr)-837.2[1]-737.6[1]171.71[1]117.57[1]
KMnO4 (ai)-793.8[1]-730.5[1]293.7[1]-60.2[1]
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, (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
NaIO3 (cr)-481.788[1]โ€“โ€“92.0[1]
NaIO3 (ai)-461.5[1]-389.9[1]177.4[1]โ€“
NaIO3 (cr)
1 hydrate
-779.48[1]-634.03[1]162.3[1]โ€“
NaIO3 (cr)
5 hydrate
-1952.25[1]โ€“โ€“โ€“
Na2MnO4 (cr)-1156.0[1]โ€“โ€“โ€“
Na2MnO4 (ai)-1134[1]-1024.6[1]176[1]โ€“
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]
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, (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)