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  3. 9CoCl2 + 5KMnO4 + 32H^+ ๐Ÿ”ฅโ†’ 9Co^3+ + 4Cl2Oโ†‘ + 5MnCl2 + 5K^+ + 16H2O

9CoCl2 + 5KMnO4 + 32H+ ๐Ÿ”ฅโ†’ 9Co3+ + 4Cl2Oโ†‘ + 5MnCl2 + 5K+ + 16H2O

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Reaction of cobalt(II) chloride and potassium permanganate under acidic condition
9CoCl2Cobalt(II) chloride + 5KMnO4Potassium permanganate + 32H+Hydrogen ion
๐Ÿ”ฅ
โŸถ
9Co3+Cobalt(III) ion + 4Cl2Oโ†‘Dichlorine monoxide + 5MnCl2Manganese(II) chloride + 5K+Potassium ion + 16H2OWater

The reaction of cobalt(II) chloride, potassium permanganate, and hydrogen ion yields cobalt(III) ion, dichlorine monoxide, manganese(II) chloride, potassium ion, 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

Reaction of cobalt(II) chloride and potassium permanganate under acidic condition
9CoCl2Cobalt(II) chloride + 5KMnO4Potassium permanganate + 32H+Hydrogen ion
๐Ÿ”ฅ
โŸถ
9Co3+Cobalt(III) ion + 4Cl2Oโ†‘Dichlorine monoxide + 5MnCl2Manganese(II) chloride + 5K+Potassium ion + 16H2OWater

General equation

Reaction of hardly oxidizable species and oxidizing species under acidic condition
Hardly oxidizable speciesReducing agent + Oxidizing speciesOxidizing agent + H+Non-redox agent
โŸถ
ProductOxidation product + ProductReduction product + H2ONon-redox product

Oxidation state of each atom

Reaction of cobalt(II) chloride and potassium permanganate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
CoCl2Cobalt(II) chloride9
Reducing
Hardly oxidizable
KMnO4Potassium permanganate5
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion32
โ€“
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
Co3+Cobalt(III) ion9
Oxidized
โ€“
Cl2ODichlorine monoxide4
Oxidized
โ€“
MnCl2Manganese(II) chloride5
Reduced
โ€“
K+Potassium ion5
โ€“
โ€“
H2OWater16
โ€“
Water

Thermodynamic changes

Changes in standard condition (1)

Reaction of cobalt(II) chloride and potassium permanganate under acidic condition
โ—†
ฮ”rG436 kJ/mol
K0.41 ร— 10โˆ’76
pK76.38
9CoCl2Ionized aqueous solution + 5KMnO4Ionized aqueous solution + 32H+Un-ionized aqueous solution
๐Ÿ”ฅ
โŸถ
9Co3+Un-ionized aqueous solution + 4Cl2Oโ†‘Gas + 5MnCl2Ionized aqueous solution + 5K+Un-ionized aqueous solution + 16H2OLiquid
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
40436โˆ’1323โ€“
4.448.4โˆ’147.0โ€“
8.087.2โˆ’264.6โ€“
per 1 mol of
Hydrogen ion
1.313.6โˆ’41.34โ€“
per 1 mol of
Cobalt(III) ion
4.448.4โˆ’147.0โ€“
10109โˆ’330.8โ€“
8.087.2โˆ’264.6โ€“
per 1 mol of
Potassium ion
8.087.2โˆ’264.6โ€“
per 1 mol of
2.527.3โˆ’82.69โ€“

Changes in standard condition (2)

Reaction of cobalt(II) chloride and potassium permanganate under acidic condition
โ—†
ฮ”rG430 kJ/mol
K0.46 ร— 10โˆ’75
pK75.33
9CoCl2Ionized aqueous solution + 5KMnO4Ionized aqueous solution + 32H+Un-ionized aqueous solution
๐Ÿ”ฅ
โŸถ
9Co3+Un-ionized aqueous solution + 4Cl2Oโ†‘Gas + 5MnCl2Un-ionized aqueous solution + 5K+Un-ionized aqueous solution + 16H2OLiquid
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€“430โ€“โ€“
โ€“47.8โ€“โ€“
โ€“86.0โ€“โ€“
per 1 mol of
Hydrogen ion
โ€“13.4โ€“โ€“
per 1 mol of
Cobalt(III) ion
โ€“47.8โ€“โ€“
โ€“108โ€“โ€“
โ€“86.0โ€“โ€“
per 1 mol of
Potassium ion
โ€“86.0โ€“โ€“
per 1 mol of
โ€“26.9โ€“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
CoCl2 (cr)-312.5[1]-269.8[1]109.16[1]78.49[1]
CoCl2 (ai)-392.5[1]-316.7[1]0[1]โ€“
CoCl2 (cr)
1 hydrate
-615[1]โ€“โ€“โ€“
CoCl2 (cr)
2 hydrate
-923.0[1]-764.7[1]188[1]โ€“
CoCl2 (cr)
6 hydrate
-2115.4[1]-1725.2[1]343[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]
H+ (g)1536.202[1]โ€“โ€“โ€“
H+ (ao)0[1]0[1]0[1]0[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (g):Gas, (ao):Un-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
Co3+ (g)6082.7[1]โ€“โ€“โ€“
Co3+ (ao)92[1]134[1]-305[1]โ€“
Cl2O (g)80.3[1]97.9[1]266.21[1]45.40[1]
MnCl2 (cr)-481.29[1]-440.50[1]118.24[1]72.93[1]
MnCl2 (g)-263.6[1]โ€“โ€“โ€“
MnCl2 (ai)-555.05[1]-490.8[1]38.9[1]-222[1]
MnCl2 (ao)โ€“-492.0[1]โ€“โ€“
MnCl2 (cr)
1 hydrate
-789.9[1]-696.1[1]174.1[1]โ€“
MnCl2 (cr)
2 hydrate
-1092.0[1]-942.1[1]218.8[1]โ€“
MnCl2 (cr)
4 hydrate
-1687.4[1]-1423.6[1]303.3[1]โ€“
K+ (g)514.26[1]โ€“โ€“โ€“
K+ (ao)-252.38[1]-283.27[1]102.5[1]21.8[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]
* (g):Gas, (ao):Un-ionized aqueous solution, (cr):Crystalline solid, (ai):Ionized aqueous solution, (l):Liquid

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)