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13KI + 3Mg(ClO4)2 ๐Ÿ”ฅโ†’ 7KIO3 + 3K2O + 3Cl2โ†‘ + 3MgI2

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Reaction of potassium iodide and magnesium perchlorate
13KIPotassium iodide + 3Mg(ClO4)2Magnesium perchlorate
๐Ÿ”ฅ
โŸถ
7KIO3Potassium iodate + 3K2OPotassium oxide + 3Cl2โ†‘Chlorine + 3MgI2Magnesium iodide

The reaction of potassium iodide and magnesium perchlorate yields potassium iodate, potassium oxide, chlorine, and magnesium 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 magnesium perchlorate
13KIPotassium iodide + 3Mg(ClO4)2Magnesium perchlorate
๐Ÿ”ฅ
โŸถ
7KIO3Potassium iodate + 3K2OPotassium oxide + 3Cl2โ†‘Chlorine + 3MgI2Magnesium iodide

General equation

Reaction of oxidizable species and oxidizing species
Oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent
โŸถ
ProductOxidation product + ProductReduction product

Oxidation state of each atom

Reaction of potassium iodide and magnesium perchlorate

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
KIPotassium iodide13
Reducing
Oxidizable
Mg(ClO4)2Magnesium perchlorate3
Oxidizing
Oxidizing

Products

Chemical formulaNameCoefficientTypeType in general
equation
KIO3Potassium iodate7
Oxidized
โ€“
K2OPotassium oxide3
โ€“
โ€“
Cl2Chlorine3
Reduced
โ€“
MgI2Magnesium iodide3
โ€“
โ€“

Thermodynamic changes

Changes in standard condition

Reaction of potassium iodide and magnesium perchlorate
13KICrystalline solid + 3Mg(ClO4)2Crystalline solid
๐Ÿ”ฅ
โŸถ
7KIO3Crystalline solid + 3K2OCrystalline solid + 3Cl2โ†‘Gas + 3MgI2Crystalline solid
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
283.3โ€“โ€“โ€“
per 1 mol of
21.79โ€“โ€“โ€“
94.43โ€“โ€“โ€“
per 1 mol of
40.47โ€“โ€“โ€“
per 1 mol of
94.43โ€“โ€“โ€“
per 1 mol of
94.43โ€“โ€“โ€“
per 1 mol of
94.43โ€“โ€“โ€“

Changes in aqueous solution (1)

Reaction of potassium iodide and magnesium perchlorate
โ—†
ฮ”rG249.5 kJ/mol
K0.19 ร— 10โˆ’43
pK43.71
13KIIonized aqueous solution + 3Mg(ClO4)2Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
7KIO3Ionized aqueous solution + 3K2OCrystalline solid + 3Cl2โ†‘Gas + 3MgI2Ionized 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
43.6249.5โˆ’705.8โ€“
per 1 mol of
3.3519.19โˆ’54.29โ€“
14.583.17โˆ’235.3โ€“
per 1 mol of
6.2335.64โˆ’100.8โ€“
per 1 mol of
14.583.17โˆ’235.3โ€“
per 1 mol of
14.583.17โˆ’235.3โ€“
per 1 mol of
14.583.17โˆ’235.3โ€“

Changes in aqueous solution (2)

Reaction of potassium iodide and magnesium perchlorate
โ—†
ฮ”rG270.3 kJ/mol
K0.44 ร— 10โˆ’47
pK47.35
13KIIonized aqueous solution + 3Mg(ClO4)2Ionized aqueous solution
๐Ÿ”ฅ
โŸถ
7KIO3Ionized aqueous solution + 3K2OCrystalline solid + 3Cl2โ†‘Un-ionized aqueous solution + 3MgI2Ionized 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
โˆ’26.6270.3โˆ’1012โ€“
per 1 mol of
โˆ’2.0520.79โˆ’77.85โ€“
โˆ’8.8790.10โˆ’337.3โ€“
per 1 mol of
โˆ’3.8038.61โˆ’144.6โ€“
per 1 mol of
โˆ’8.8790.10โˆ’337.3โ€“
per 1 mol of
โˆ’8.8790.10โˆ’337.3โ€“
per 1 mol of
โˆ’8.8790.10โˆ’337.3โ€“

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]
Mg(ClO4)2 (cr)-568.90[1]โ€“โ€“โ€“
Mg(ClO4)2 (ai)-725.51[1]-471.8[1]225.9[1]โ€“
Mg(ClO4)2 (cr)
2 hydrate
-1218.8[1]โ€“โ€“โ€“
Mg(ClO4)2 (cr)
4 hydrate
-1837.2[1]โ€“โ€“โ€“
Mg(ClO4)2 (cr)
6 hydrate
-2445.5[1]-1862.7[1]520.9[1]โ€“
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution

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
KIO3 (cr)-501.37[1]-418.35[1]151.46[1]106.48[1]
KIO3 (ai)-473.6[1]-411.2[1]220.9[1]โ€“
K2O (cr)-361.5[1]-322.1[2]94.1[2]83.7[2]
K2O (g)-63[1]โ€“โ€“โ€“
Cl2 (g)0[1]0[1]223.066[1]33.907[1]
Cl2 (ao)-23.4[1]6.94[1]121[1]โ€“
MgI2 (cr)-364.0[1]-358.2[1]129.7[1]โ€“
MgI2 (g)-172[1]โ€“โ€“โ€“
MgI2 (ai)-577.22[1]-558.1[1]84.5[1]โ€“
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (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)
    • 2
      James G. Speight (2017)
      Lange's Handbook of Chemistry, 17th edition
      McGraw Hill Education