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9Ba(HCO3)2 + 8e → 9BaCO3 + 8HCO3 + 3H2O + CH4

Reduction of barium hydrogencarbonate
9Ba(HCO3)2Barium hydrogencarbonate + 8eElectron
9BaCO3Barium carbonate + 8HCO3Hydrogencarbonate ion + 3H2OWater + CH4Methane

Reduction of barium hydrogencarbonate yields barium carbonate, hydrogencarbonate ion, water, and methane (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

Reduction of barium hydrogencarbonate
9Ba(HCO3)2Barium hydrogencarbonate + 8eElectron
9BaCO3Barium carbonate + 8HCO3Hydrogencarbonate ion + 3H2OWater + CH4Methane

General equation

Reduction of reducible species
ReactantOxidizing agent + e
ProductReduction product

Oxidation state of each atom

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
Ba(HCO3)2Barium hydrogencarbonate9
Oxidizing
eElectron8
Electron

Products

Chemical formulaNameCoefficientTypeType in general
equation
BaCO3Barium carbonate9
HCO3Hydrogencarbonate ion8
H2OWater3
CH4Methane1
Reduced

Thermodynamic changes

Changes in standard condition (1)

Reduction of barium hydrogencarbonate
ΔrG−86.0 kJ/mol
K1.17 × 1015
pK−15.07
9Ba(HCO3)2Ionized aqueous solution + 8e
9BaCO3Crystalline solid + 8HCO3Un-ionized aqueous solution + 3H2OLiquid + CH4Gas
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
−120.3−86.0406.5
−13.37−9.5645.17
per 1 mol of
Electron
−15.04−10.850.81
per 1 mol of
−13.37−9.5645.17
per 1 mol of
Hydrogencarbonate ion
−15.04−10.850.81
per 1 mol of
−40.10−28.7135.5
per 1 mol of
−120.3−86.0406.5

Changes in standard condition (2)

Reduction of barium hydrogencarbonate
ΔrG−69.6 kJ/mol
K1.56 × 1012
pK−12.19
9Ba(HCO3)2Ionized aqueous solution + 8e
9BaCO3Crystalline solid + 8HCO3Un-ionized aqueous solution + 3H2OLiquid + CH4Un-ionized aqueous solution
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
−134.5−69.6303.9
−14.94−7.7333.77
per 1 mol of
Electron
−16.81−8.7037.99
per 1 mol of
−14.94−7.7333.77
per 1 mol of
Hydrogencarbonate ion
−16.81−8.7037.99
per 1 mol of
−44.83−23.2101.3
per 1 mol of
−134.5−69.6303.9

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
Ba(HCO3)2 (ai)-1921.63[1]-1734.30[1]192.0[1]
e
* (ai):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
BaCO3 (cr)-1216.3[1]-1137.6[1]112.1[1]85.35[1]
BaCO3 (ai)-1214.78[1]-1088.59[1]-47.3[1]
HCO3 (ao)-691.99[1]-586.77[1]91.2[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]
CH4 (g)-74.81[1]-50.72[1]186.264[1]35.309[1]
CH4 (ao)-89.04[1]-34.33[1]83.7[1]
* (cr):Crystalline solid, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas

References

List of references

  1. 1