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5HCl + 2BaMnO4 + 4H+ → HClO4 + 2MnCl2 + 2Ba2+ + 4H2O

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Reaction of hydrogen chloride and barium manganate under acidic condition
5HClHydrogen chloride + 2BaMnO4Barium manganate + 4H+Hydrogen ion
⟶
HClO4Perchloric acid + 2MnCl2Manganese(II) chloride + 2Ba2+Barium ion + 4H2OWater

The reaction of hydrogen chloride, barium manganate, and hydrogen ion yields perchloric acid, manganese(II) chloride, barium 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 barium manganate under acidic condition
5HClHydrogen chloride + 2BaMnO4Barium manganate + 4H+Hydrogen ion
⟶
HClO4Perchloric acid + 2MnCl2Manganese(II) chloride + 2Ba2+Barium ion + 4H2OWater

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 barium manganate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
HClHydrogen chloride5
Reducing
Hardly oxidizable
BaMnO4Barium manganate2
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion4
–
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
HClO4Perchloric acid1
Oxidized
–
MnCl2Manganese(II) chloride2
Reduced
–
Ba2+Barium ion2
–
–
H2OWater4
–
Water

Thermodynamic changes

Changes in standard condition (1)

Reaction of hydrogen chloride and barium manganate under acidic condition
◆
ΔrG−165.6 kJ/mol
K1.03 × 1029
pK−29.01
5HClIonized aqueous solution + 2BaMnO4Crystalline solid + 4H+Un-ionized aqueous solution
⟶
HClO4Ionized aqueous solution + 2MnCl2Ionized aqueous solution + 2Ba2+Un-ionized aqueous solution + 4H2OLiquid
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
–−165.6––
per 1 mol of
–−33.12––
per 1 mol of
–−82.80––
per 1 mol of
Hydrogen ion
–−41.40––
per 1 mol of
–−165.6––
–−82.80––
per 1 mol of
Barium ion
–−82.80––
per 1 mol of
–−41.40––

Changes in standard condition (2)

Reaction of hydrogen chloride and barium manganate under acidic condition
◆
ΔrG−168.0 kJ/mol
K2.71 × 1029
pK−29.43
5HClIonized aqueous solution + 2BaMnO4Crystalline solid + 4H+Un-ionized aqueous solution
⟶
HClO4Ionized aqueous solution + 2MnCl2Un-ionized aqueous solution + 2Ba2+Un-ionized aqueous solution + 4H2OLiquid
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
–−168.0––
per 1 mol of
–−33.60––
per 1 mol of
–−84.00––
per 1 mol of
Hydrogen ion
–−42.00––
per 1 mol of
–−168.0––
–−84.00––
per 1 mol of
Barium ion
–−84.00––
per 1 mol of
–−42.00––

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]
BaMnO4 (cr)–-1119.2[1]––
H+ (g)1536.202[1]–––
H+ (ao)0[1]0[1]0[1]0[1]
* (g):Gas, (ai):Ionized aqueous solution, (cr):Crystalline solid, (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
HClO4 (l)-40.58[1]–––
HClO4 (ai)-129.33[1]-8.52[1]182.0[1]–
HClO4 (cr)
1 hydrate
-382.21[1]–––
HClO4 (l)
2 hydrate
-677.98[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]–
Ba2+ (g)1660.38[1]–––
Ba2+ (ao)-537.64[1]-560.77[1]9.6[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]
* (l):Liquid, (ai):Ionized aqueous solution, (cr):Crystalline solid, (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)