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CH3COOH 💧⚡→ CO2↑ + CH4↑

CH₃COOH 💧⚡→ CO₂↑ + CH₄↑

Last updated: June 13, 2022

Electrolysis of aqueous acetic acid without water as reactant: CH₃COOHAcetic acid
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CO₂↑Carbon dioxide + CH₄↑Methane

Electrolysis of aqueous acetic acid yields carbon dioxide and methane (Other reactions are here). This reaction is an oxidation-reduction reaction and is classified as follows:

Electrolysis of aqueous solution without water as reactant

Table of contents

Reaction data

Chemical equation

Electrolysis of aqueous acetic acid without water as reactant: CH₃COOHAcetic acid
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CO₂↑Carbon dioxide + CH₄↑Methane

General equation

Electrolysis of aqueous solution without water as reactant: Miscible with water/Very soluble in water/Soluble in waterSelf redox agent
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ProductOxidation product + ProductReduction product

Oxidation state of each atom

Electrolysis of aqueous acetic acid without water as reactant

Reactants

Chemical formula	Name	Coefficient	Type	Type in general equation
CH₃COOH	Acetic acid	1	Self redox agent	Miscible with water

Products

Chemical formula	Name	Coefficient	Type	Type in general equation
CO₂	Carbon dioxide	1	Oxidized	–
CH₄	Methane	1	Reduced	–

Thermodynamic changes

Changes in standard condition

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −55.2 kJ/mol K 4.68 × 10⁹ pK −9.67: CH₃COOHLiquid
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CO₂↑Gas + CH₄↑Gas

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	16.2	−55.2	240.2	−51.9
per 1 mol of Acetic acid	16.2	−55.2	240.2	−51.9
per 1 mol of Carbon dioxide	16.2	−55.2	240.2	−51.9
per 1 mol of Methane	16.2	−55.2	240.2	−51.9

Changes in aqueous solution (1)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −75.77 kJ/mol K 1.88 × 10¹³ pK −13.27: CH₃COOHIonized aqueous solution
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CO₂↑Gas + CH₄↑Gas

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	17.69	−75.77	313.4	78.7
per 1 mol of Acetic acid	17.69	−75.77	313.4	78.7
per 1 mol of Carbon dioxide	17.69	−75.77	313.4	78.7
per 1 mol of Methane	17.69	−75.77	313.4	78.7

Changes in aqueous solution (2)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −59.38 kJ/mol K 2.53 × 10¹⁰ pK −10.40: CH₃COOHIonized aqueous solution
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CO₂↑Gas + CH₄↑Un-ionized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	3.46	−59.38	210.8	–
per 1 mol of Acetic acid	3.46	−59.38	210.8	–
per 1 mol of Carbon dioxide	3.46	−59.38	210.8	–
per 1 mol of Methane	3.46	−59.38	210.8	–

Changes in aqueous solution (3)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −67.39 kJ/mol K 6.40 × 10¹¹ pK −11.81: CH₃COOHIonized aqueous solution
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CO₂↑Un-ionized aqueous solution + CH₄↑Gas

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	−2.60	−67.39	217.3	–
per 1 mol of Acetic acid	−2.60	−67.39	217.3	–
per 1 mol of Carbon dioxide	−2.60	−67.39	217.3	–
per 1 mol of Methane	−2.60	−67.39	217.3	–

Changes in aqueous solution (4)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −51.00 kJ/mol K 8.61 × 10⁸ pK −8.93: CH₃COOHIonized aqueous solution
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CO₂↑Un-ionized aqueous solution + CH₄↑Un-ionized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	−16.83	−51.00	114.7	–
per 1 mol of Acetic acid	−16.83	−51.00	114.7	–
per 1 mol of Carbon dioxide	−16.83	−51.00	114.7	–
per 1 mol of Methane	−16.83	−51.00	114.7	–

Changes in aqueous solution (5)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −48.62 kJ/mol K 3.30 × 10⁸ pK −8.52: CH₃COOHUn-ionized aqueous solution
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CO₂↑Gas + CH₄↑Gas

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	17.44	−48.62	221.3	–
per 1 mol of Acetic acid	17.44	−48.62	221.3	–
per 1 mol of Carbon dioxide	17.44	−48.62	221.3	–
per 1 mol of Methane	17.44	−48.62	221.3	–

Changes in aqueous solution (6)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −32.23 kJ/mol K 4.43 × 10⁵ pK −5.65: CH₃COOHUn-ionized aqueous solution
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CO₂↑Gas + CH₄↑Un-ionized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	3.21	−32.23	118.7	–
per 1 mol of Acetic acid	3.21	−32.23	118.7	–
per 1 mol of Carbon dioxide	3.21	−32.23	118.7	–
per 1 mol of Methane	3.21	−32.23	118.7	–

Changes in aqueous solution (7)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −40.24 kJ/mol K 1.12 × 10⁷ pK −7.05: CH₃COOHUn-ionized aqueous solution
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CO₂↑Un-ionized aqueous solution + CH₄↑Gas

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	−2.85	−40.24	125.2	–
per 1 mol of Acetic acid	−2.85	−40.24	125.2	–
per 1 mol of Carbon dioxide	−2.85	−40.24	125.2	–
per 1 mol of Methane	−2.85	−40.24	125.2	–

Changes in aqueous solution (8)

Electrolysis of aqueous acetic acid without water as reactant ◆ Δ_rG −23.85 kJ/mol K 1.51 × 10⁴ pK −4.18: CH₃COOHUn-ionized aqueous solution
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CO₂↑Un-ionized aqueous solution + CH₄↑Un-ionized aqueous solution

	Standard enthalpy of reaction Δ_rH° kJ · mol⁻¹	Standard Gibbs energy of reaction Δ_rG° kJ · mol⁻¹	Standard entropy of reaction Δ_rS° J · K⁻¹ · mol⁻¹	Standard heat capacity of reaction at constant pressure Δ_rC_p° J · K⁻¹ · mol⁻¹
per 1 mol of Equation	−17.08	−23.85	22.6	–
per 1 mol of Acetic acid	−17.08	−23.85	22.6	–
per 1 mol of Carbon dioxide	−17.08	−23.85	22.6	–
per 1 mol of Methane	−17.08	−23.85	22.6	–

Thermodynamic data of reactants

Chemical formula	Standard enthalpy of formation Δ_fH° kJ · mol⁻¹	Standard Gibbs energy of formation Δ_fG° kJ · mol⁻¹	Standard molar entropy S° J · K⁻¹ · mol⁻¹	Standard molar heat capacity at constant pressure C_p° J · K⁻¹ · mol⁻¹
CH₃COOH (l)	-484.5^[1]	-389.9^[1]	159.8^[1]	124.3^[1]
CH₃COOH (g)	-432.25^[1]	-374.0^[1]	282.5^[1]	66.5^[1]
CH₃COOH (ai)	-486.01^[1]	-369.31^[1]	86.6^[1]	-6.3^[1]
CH₃COOH (ao)	-485.76^[1]	-396.46^[1]	178.7^[1]	–

* (l):Liquid, (g):Gas, (ai):Ionized aqueous solution, (ao):Un-ionized aqueous solution

Thermodynamic data of products

Chemical formula	Standard enthalpy of formation Δ_fH° kJ · mol⁻¹	Standard Gibbs energy of formation Δ_fG° kJ · mol⁻¹	Standard molar entropy S° J · K⁻¹ · mol⁻¹	Standard molar heat capacity at constant pressure C_p° J · K⁻¹ · mol⁻¹
CO₂ (g)	-393.509^[1]	-394.359^[1]	213.74^[1]	37.11^[1]
CO₂ (ao)	-413.80^[1]	-385.98^[1]	117.6^[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]	–

* (g):Gas, (ao):Un-ionized aqueous solution

References

List of references

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
https://doi.org/10.18434/M32124
National Institute of Standards and Technology (NIST)
Citation list

Δ_rG	−55.2 kJ/mol
K	4.68 × 10⁹
pK	−9.67

Δ_rG	−75.77 kJ/mol
K	1.88 × 10¹³
pK	−13.27

Δ_rG	−59.38 kJ/mol
K	2.53 × 10¹⁰
pK	−10.40

Δ_rG	−67.39 kJ/mol
K	6.40 × 10¹¹
pK	−11.81

CH3COOH 💧⚡→ CO2↑ + CH4↑

Reaction data

Chemical equation

General equation

Oxidation state of each atom

Reactants

Products

Thermodynamic changes

Changes in standard condition

Changes in aqueous solution (1)

Changes in aqueous solution (2)

Changes in aqueous solution (3)

Changes in aqueous solution (4)

Changes in aqueous solution (5)

Changes in aqueous solution (6)

Changes in aqueous solution (7)

Changes in aqueous solution (8)

Thermodynamic data of reactants

Thermodynamic data of products

References

List of references

Related reactions

Reactions with same reactants

Related categories

Type of reaction

General equation

Reactant

Product

CH₃COOH 💧⚡→ CO₂↑ + CH₄↑