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Mn2+ + 2OH → MnO↓ + H2O

Reaction of manganese(II) ion and hydroxide ion
Mn2+Manganese(II) ion + 2OHHydroxide ion
MnOManganese(II) oxide + H2OWater

The reaction of manganese(II) ion and hydroxide ion yields manganese(II) oxide and water (Other reactions are here). This reaction is an acid-base 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 manganese(II) ion and hydroxide ion
Mn2+Manganese(II) ion + 2OHHydroxide ion
MnOManganese(II) oxide + H2OWater

General equation

Reaction of cation and anion
CationLewis acid + AnionLewis base
ProductLewis conjugate + (H2O)

Oxidation state of each atom

Reaction of manganese(II) ion and hydroxide ion

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Mn2+Manganese(II) ion1
Lewis acid
Cation
OHHydroxide ion2
Lewis base
Anion

Products

Chemical formulaNameCoefficientTypeType in general
equation
MnOManganese(II) oxide1
Lewis conjugate
Insoluble in water
H2OWater1
Water

Thermodynamic changes

Changes in standard condition

Reaction of manganese(II) ion and hydroxide ion
ΔrG−57.4 kJ/mol
K1.14 × 1010
pK−10.06
Mn2+Un-ionized aqueous solution + 2OHUn-ionized aqueous solution
MnOCrystalline solid + H2OLiquid
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
9.69−57.4224.7368
per 1 mol of
Manganese(II) ion
9.69−57.4224.7368
per 1 mol of
Hydroxide ion
4.84−28.7112.3184
9.69−57.4224.7368
per 1 mol of
9.69−57.4224.7368

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
Mn2+ (g)2519.69[1]
Mn2+ (ao)-220.75[1]-228.1[1]-73.6[1]50[1]
OH (g)-143.5[1]
OH (ao)-229.994[1]-157.244[1]-10.75[1]-148.5[1]
* (g):Gas, (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
MnO (cr)-385.22[1]-362.90[1]59.71[1]45.44[1]
MnO (g)124.22[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]
* (cr):Crystalline solid, (g):Gas, (l):Liquid

References

List of references

  1. 1