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14HCl + Zn(MnO4)2 + 2H+ → 5Cl2 + 2MnCl2 + Zn2+ + 8H2O

Reaction of hydrogen chloride and zinc permanganate under acidic condition

The reaction of hydrogen chloride, zinc permanganate, and hydrogen ion yields chlorine, manganese(II) chloride, zinc 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 hydrogen chloride and zinc permanganate under acidic condition

General equation

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

Oxidation state of each atom

Reaction of hydrogen chloride and zinc permanganate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
HClHydrogen chloride14
Reducing
Hardly oxidizable
Zn(MnO4)2Zinc permanganate1
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion2
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
Cl2Chlorine5
Oxidized
MnCl2Manganese(II) chloride2
Reduced
Zn2+Zinc ion1
H2OWater8
Water

Thermodynamic changes

Changes in aqueous solution (1)

Reaction of hydrogen chloride and zinc permanganate under acidic condition
14HClIonized aqueous solution + Zn(MnO4)2Ionized aqueous solution + 2H+Un-ionized aqueous solution
5Cl2Gas + 2MnCl2Ionized aqueous solution + Zn2+Un-ionized aqueous solution + 8H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
2534
per 1 mol of
181.0
per 1 mol of
2534
per 1 mol of
Hydrogen ion
1267
per 1 mol of
506.8
1267
per 1 mol of
Zinc ion
2534
per 1 mol of
316.8

Changes in aqueous solution (2)

Reaction of hydrogen chloride and zinc permanganate under acidic condition
14HClIonized aqueous solution + Zn(MnO4)2Ionized aqueous solution + 2H+Un-ionized aqueous solution
5Cl2Gas + 2MnCl2Un-ionized aqueous solution + Zn2+Un-ionized aqueous solution + 8H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
per 1 mol of
per 1 mol of
per 1 mol of
Hydrogen ion
per 1 mol of
per 1 mol of
Zinc ion
per 1 mol of

Changes in aqueous solution (3)

Reaction of hydrogen chloride and zinc permanganate under acidic condition
14HClIonized aqueous solution + Zn(MnO4)2Ionized aqueous solution + 2H+Un-ionized aqueous solution
5Cl2Un-ionized aqueous solution + 2MnCl2Ionized aqueous solution + Zn2+Un-ionized aqueous solution + 8H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
per 1 mol of
per 1 mol of
per 1 mol of
Hydrogen ion
per 1 mol of
per 1 mol of
Zinc ion
per 1 mol of

Changes in aqueous solution (4)

Reaction of hydrogen chloride and zinc permanganate under acidic condition
14HClIonized aqueous solution + Zn(MnO4)2Ionized aqueous solution + 2H+Un-ionized aqueous solution
5Cl2Un-ionized aqueous solution + 2MnCl2Un-ionized aqueous solution + Zn2+Un-ionized aqueous solution + 8H2OLiquid
Standard enthalpy
of reaction
ΔrH°
kJ · mol−1
Standard
Gibbs energy
of reaction
ΔrG°
kJ · mol−1
Standard entropy
of reaction
ΔrS°
J · K−1 · mol−1
Standard heat
capacity of reaction
at constant pressure
ΔrCp°
J · K−1 · mol−1
per 1 mol of
Equation
per 1 mol of
per 1 mol of
per 1 mol of
Hydrogen ion
per 1 mol of
per 1 mol of
Zinc ion
per 1 mol of

Thermodynamic data of reactants

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
HCl (g)-92.307[1]-95.299[1]186.908[1]29.12[1]
HCl (ai)-167.159[1]-131.228[1]56.5[1]-136.4[1]
Zn(MnO4)2 (ai)-251[1]
H+ (g)1536.202[1]
H+ (ao)0[1]0[1]0[1]0[1]
* (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution

Thermodynamic data of products

Chemical formulaStandard enthalpy
of formation
ΔfH°
kJ · mol−1
Standard Gibbs
energy of
formation
ΔfG°
kJ · mol−1
Standard
molar entropy
S°
J · K−1 · mol−1
Standard molar
heat capacity at
constant pressure
Cp°
J · K−1 · mol−1
Cl2 (g)0[1]0[1]223.066[1]33.907[1]
Cl2 (ao)-23.4[1]6.94[1]121[1]
MnCl2 (cr)-481.29[1]-440.50[1]118.24[1]72.93[1]
MnCl2 (g)-263.6[1]
MnCl2 (ai)-555.05[1]-490.8[1]38.9[1]-222[1]
MnCl2 (ao)-492.0[1]
MnCl2 (cr)
1 hydrate
-789.9[1]-696.1[1]174.1[1]
MnCl2 (cr)
2 hydrate
-1092.0[1]-942.1[1]218.8[1]
MnCl2 (cr)
4 hydrate
-1687.4[1]-1423.6[1]303.3[1]
Zn2+ (g)2782.78[1]
Zn2+ (ao)-153.89[1]-147.06[1]-112.1[1]46[1]
H2O (cr)
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)