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  3. 3Hg2Cl2 + 2KMnO4 + 14H^+ ๐Ÿ”ฅโ†’ 6Hg^2+ + 2HClO + 2MnCl2 + 2K^+ + 6H2O

3Hg2Cl2 + 2KMnO4 + 14H+ ๐Ÿ”ฅโ†’ 6Hg2+ + 2HClO + 2MnCl2 + 2K+ + 6H2O

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Reaction of mercury(I) chloride and potassium permanganate under acidic condition
3Hg2Cl2Mercury(I) chloride + 2KMnO4Potassium permanganate + 14H+Hydrogen ion
๐Ÿ”ฅ
โŸถ
6Hg2+Mercury(II) ion + 2HClOHypochlorous acid + 2MnCl2Manganese(II) chloride + 2K+Potassium ion + 6H2OWater

The reaction of mercury(I) chloride, potassium permanganate, and hydrogen ion yields mercury(II) ion, hypochlorous acid, 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 mercury(I) chloride and potassium permanganate under acidic condition
3Hg2Cl2Mercury(I) chloride + 2KMnO4Potassium permanganate + 14H+Hydrogen ion
๐Ÿ”ฅ
โŸถ
6Hg2+Mercury(II) ion + 2HClOHypochlorous acid + 2MnCl2Manganese(II) chloride + 2K+Potassium ion + 6H2OWater

General equation

Reaction of oxidizable species and oxidizing species under acidic condition
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 mercury(I) chloride and potassium permanganate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Hg2Cl2Mercury(I) chloride3
Reducing
Oxidizable
KMnO4Potassium permanganate2
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion14
โ€“
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
Hg2+Mercury(II) ion6
Oxidized
โ€“
HClOHypochlorous acid2
Oxidized
โ€“
MnCl2Manganese(II) chloride2
Reduced
โ€“
K+Potassium ion2
โ€“
โ€“
H2OWater6
โ€“
Water

Thermodynamic changes

Changes in standard condition (1)

Reaction of mercury(I) chloride and potassium permanganate under acidic condition
โ—†
ฮ”rGโˆ’51.1 kJ/mol
K8.96 ร— 108
pKโˆ’8.95
3Hg2Cl2Crystalline solid + 2KMnO4Ionized aqueous solution + 14H+Un-ionized aqueous solution
๐Ÿ”ฅ
โŸถ
6Hg2+Un-ionized aqueous solution + 2HClOUn-ionized aqueous solution + 2MnCl2Ionized aqueous solution + 2K+Un-ionized aqueous solution + 6H2OLiquid
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’161.8โˆ’51.1โˆ’372โ€“
โˆ’53.93โˆ’17.0โˆ’124โ€“
โˆ’80.90โˆ’25.6โˆ’186โ€“
per 1 mol of
Hydrogen ion
โˆ’11.56โˆ’3.65โˆ’26.6โ€“
per 1 mol of
Mercury(II) ion
โˆ’26.97โˆ’8.52โˆ’62.0โ€“
per 1 mol of
โˆ’80.90โˆ’25.6โˆ’186โ€“
โˆ’80.90โˆ’25.6โˆ’186โ€“
per 1 mol of
Potassium ion
โˆ’80.90โˆ’25.6โˆ’186โ€“
per 1 mol of
โˆ’26.97โˆ’8.52โˆ’62.0โ€“

Changes in standard condition (2)

Reaction of mercury(I) chloride and potassium permanganate under acidic condition
โ—†
ฮ”rGโˆ’53.5 kJ/mol
K2.36 ร— 109
pKโˆ’9.37
3Hg2Cl2Crystalline solid + 2KMnO4Ionized aqueous solution + 14H+Un-ionized aqueous solution
๐Ÿ”ฅ
โŸถ
6Hg2+Un-ionized aqueous solution + 2HClOUn-ionized aqueous solution + 2MnCl2Un-ionized aqueous solution + 2K+Un-ionized aqueous solution + 6H2OLiquid
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€“โˆ’53.5โ€“โ€“
โ€“โˆ’17.8โ€“โ€“
โ€“โˆ’26.8โ€“โ€“
per 1 mol of
Hydrogen ion
โ€“โˆ’3.82โ€“โ€“
per 1 mol of
Mercury(II) ion
โ€“โˆ’8.92โ€“โ€“
per 1 mol of
โ€“โˆ’26.8โ€“โ€“
โ€“โˆ’26.8โ€“โ€“
per 1 mol of
Potassium ion
โ€“โˆ’26.8โ€“โ€“
per 1 mol of
โ€“โˆ’8.92โ€“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
Hg2Cl2 (cr)-265.22[1]-210.745[1]192.5[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
Hg2+ (g)2890.47[1]โ€“โ€“โ€“
Hg2+ (ao)171.1[1]164.40[1]-32.2[1]โ€“
HClO (g)-78.7[1]-66.1[1]236.67[1]37.15[1]
HClO (ao)-120.9[1]-79.9[1]142[1]โ€“
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)