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H3O+ + NaCO3− → NaHCO3 + H2O

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Reaction of hydronium ion and sodium carbonate ion
H3O+Hydronium ion + NaCO3−Sodium carbonate ion
⟶
NaHCO3Sodium hydrogencarbonate + H2OWater

The reaction of hydronium ion and sodium carbonate ion yields sodium hydrogencarbonate and water. 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 categories

Reaction data

Chemical equation

Reaction of hydronium ion and sodium carbonate ion
H3O+Hydronium ion + NaCO3−Sodium carbonate ion
⟶
NaHCO3Sodium hydrogencarbonate + H2OWater

General equation

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

Oxidation state of each atom

Reaction of hydronium ion and sodium carbonate ion

Reactants

Chemical formulaNameCoefficientTypeType in general
equation
H3O+Hydronium ion1
Lewis acid
Cation
NaCO3−Sodium carbonate ion1
Lewis base
Anion

Products

Chemical formulaNameCoefficientTypeType in general
equation
NaHCO3Sodium hydrogencarbonate1
Lewis conjugate
–
H2OWater1
–
Water

Thermodynamic changes

Changes in standard condition (1)

Reaction of hydronium ion and sodium carbonate ion
◆
ΔrG−55.86 kJ/mol
K6.11 × 109
pK−9.79
H3O+Un-ionized aqueous solution + NaCO3−Un-ionized aqueous solution
⟶
NaHCO3Ionized aqueous solution + 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
3.81−55.86200.0–
per 1 mol of
Hydronium ion
3.81−55.86200.0–
per 1 mol of
Sodium carbonate ion
3.81−55.86200.0–
3.81−55.86200.0–
per 1 mol of
3.81−55.86200.0–

Changes in standard condition (2)

Reaction of hydronium ion and sodium carbonate ion
◆
ΔrG−56.9 kJ/mol
K9.30 × 109
pK−9.97
H3O+Un-ionized aqueous solution + NaCO3−Un-ionized aqueous solution
⟶
NaHCO3Un-ionized aqueous solution + 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
−8.0−56.9163.6–
per 1 mol of
Hydronium ion
−8.0−56.9163.6–
per 1 mol of
Sodium carbonate ion
−8.0−56.9163.6–
−8.0−56.9163.6–
per 1 mol of
−8.0−56.9163.6–

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
H3O+ (ao)-285.830[1]-237.129[1]69.91[1]75.291[1]
NaCO3− (ao)-935.92[1]-792.80[1]-49.8[1]–
* (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
NaHCO3 (cr)-950.81[1]-851.0[1]101.7[1]87.61[1]
NaHCO3 (ai)-932.11[1]-848.66[1]150.2[1]–
NaHCO3 (ao)-943.9[1]-849.7[1]113.8[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, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution, (l):Liquid, (g):Gas

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)