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12SrCl2 + 8KMnO4 + 24H+ → 12Sr2+ + 5KClO4 + 8MnCl2 + 3KCl + 12H2O

The reaction of strontium chloride, potassium permanganate, and hydrogen ion yields strontium ion, potassium perchlorate, manganese(II) chloride, potassium chloride, 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

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 strontium chloride and potassium permanganate under acidic condition

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
SrCl2Strontium chloride12
Reducing
Hardly oxidizable
KMnO4Potassium permanganate8
Oxidizing
Oxidizing under acidic condition
H+Hydrogen ion24
Hydrogen ion

Products

Chemical formulaNameCoefficientTypeType in general
equation
Sr2+Strontium ion12
KClO4Potassium perchlorate5
Oxidized
MnCl2Manganese(II) chloride8
Reduced
KClPotassium chloride3
H2OWater12
Water

Thermodynamic changes

Changes in standard condition (1)

Reaction of strontium chloride and potassium permanganate under acidic condition
ΔrG−481.2 kJ/mol
K2.01 × 1084
pK−84.30
12SrCl2Ionized aqueous solution + 8KMnO4Ionized aqueous solution + 24H+Un-ionized aqueous solution
12Sr2+Un-ionized aqueous solution + 5KClO4Ionized aqueous solution + 8MnCl2Ionized aqueous solution + 3KClIonized aqueous solution + 12H2OLiquid
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
−675.5−481.2−654.8
per 1 mol of
−56.29−40.10−54.57
−84.44−60.15−81.85
per 1 mol of
Hydrogen ion
−28.15−20.05−27.28
per 1 mol of
Strontium ion
−56.29−40.10−54.57
−135.1−96.24−131.0
−84.44−60.15−81.85
per 1 mol of
−225.2−160.4−218.3
per 1 mol of
−56.29−40.10−54.57

Changes in standard condition (2)

Reaction of strontium chloride and potassium permanganate under acidic condition
ΔrG−490.8 kJ/mol
K9.65 × 1085
pK−85.98
12SrCl2Ionized aqueous solution + 8KMnO4Ionized aqueous solution + 24H+Un-ionized aqueous solution
12Sr2+Un-ionized aqueous solution + 5KClO4Ionized aqueous solution + 8MnCl2Un-ionized aqueous solution + 3KClIonized aqueous solution + 12H2OLiquid
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
−490.8
per 1 mol of
−40.90
−61.35
per 1 mol of
Hydrogen ion
−20.45
per 1 mol of
Strontium ion
−40.90
−98.16
−61.35
per 1 mol of
−163.6
per 1 mol of
−40.90

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
SrCl2 (cr)
α
-828.9[1]-781.1[1]114.85[1]75.60[1]
SrCl2 (g)-485.8[1]-496.2[1]310.81[1]55.77[1]
SrCl2 (ai)-880.10[1]-821.91[1]80.3[1]
SrCl2 (cr)
1 hydrate
-1136.8[1]-1036.3[1]172[1]120.1[1]
SrCl2 (cr)
2 hydrate
-1438.0[1]-1281.8[1]218[1]160.2[1]
SrCl2 (cr)
6 hydrate
-2623.8[1]-2240.92[1]390.8[1]
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]
H+ (ao)0[1]0[1]0[1]0[1]
* (cr):Crystalline solid, (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
Sr2+ (g)1790.54[1]
Sr2+ (ao)-545.80[1]-559.48[1]-32.6[1]
KClO4 (cr)-432.75[1]-303.09[1]151.0[1]112.38[1]
KClO4 (ai)-381.71[1]-291.79[1]284.5[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]
KCl (cr)-436.747[1]-409.14[1]82.59[1]51.30[1]
KCl (g)-214.14[1]-233.0[1]239.10[1]36.48[1]
KCl (ai)-419.53[1]-414.49[1]159.0[1]-114.6[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]
* (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)