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Gibbs Free Energy Change Formula

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The Gibbs Free Energy Change is a measure of the maximum amount of work that can be performed during a chemical process ( ΔG=wmax ). Check FAQs

ΔG = - n electron \cdot \frac{[Faraday]}{E}

ΔG - Gibbs Free Energy Change?n_electron - Number of Moles of Electron?E - Electrode Potential of a System?[Faraday] - Faraday constant?

Gibbs Free Energy Change Example

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Here is how the Gibbs Free Energy Change equation looks like with Values.

Here is how the Gibbs Free Energy Change equation looks like with Units.

Here is how the Gibbs Free Energy Change equation looks like.

-70.5639 = - 49 \cdot \frac{96485.3321}{67}

-70.5639KJ = - 49 \cdot \frac{96485.3321}{67V}

-70.5639 = - 49 \cdot \frac{96485.3321}{67}

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Gibbs Free Energy Change Solution

Follow our step by step solution on how to calculate Gibbs Free Energy Change?

FIRST Step Consider the formula

ΔG = - n electron \cdot \frac{[Faraday]}{E}

Next Step Substitute values of Variables

∴

ΔG = - 49 \cdot \frac{[Faraday]}{67V}

Next Step Substitute values of Constants

∴

ΔG = - 49 \cdot \frac{96485.3321}{67V}

Next Step Prepare to Evaluate

∴

ΔG = - 49 \cdot \frac{96485.3321}{67}

Next Step Evaluate

∴

ΔG = -70563.8996101493J

Next Step Convert to Output's Unit

∴

ΔG = -70.5638996101492KJ

LAST Step Rounding Answer

∴

ΔG = -70.5639KJ

Gibbs Free Energy Change Formula Elements

Variables

Constants

Gibbs Free Energy Change

The Gibbs Free Energy Change is a measure of the maximum amount of work that can be performed during a chemical process ( ΔG=wmax ).

Symbol: ΔG

Measurement: EnergyUnit: KJ

Note: Value can be positive or negative.

Formulas to find Gibbs Free Energy Change

Number of Moles of Electron

The Number of moles of electron is the number of moles of electron required to consume or produce given amount of substance.

Symbol: n_electron

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Number of Moles of Electron

Electrode Potential of a System

Electrode Potential of a System is the electromotive force of a galvanic cell built from a standard reference electrode and another electrode to be characterized.

Symbol: E

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Electrode Potential of a System

Faraday constant

Faraday constant represents the charge of one mole of electrons and is used in electrochemistry to relate the amount of substance undergoing oxidation.

Symbol: [Faraday]

Value: 96485.33212

Other formulas in Chemical Thermodynamics category

Go Cell Potential given Change in Gibbs Free Energy

E cell = - \frac{ΔG}{n \cdot [Faraday]}

Go Classical Part of Gibbs Free Entropy given Electric Part

Ξ k = (Ξ entropy - Ξ e)

Go Classical Part of Helmholtz Free Entropy given Electric Part

Φ k = (Φ - Φ e)

Go Electrode Potential given Gibbs Free Energy

EP = - \frac{ΔG}{n electron \cdot [Faraday]}

How to Evaluate Gibbs Free Energy Change?

Gibbs Free Energy Change evaluator uses Gibbs Free Energy Change = -Number of Moles of Electron*[Faraday]/Electrode Potential of a System to evaluate the Gibbs Free Energy Change, The Gibbs free energy change is a measure of the maximum amount of work that can be performed during a chemical process ( ΔG=wmax ). Gibbs Free Energy Change is denoted by ΔG symbol.

How to evaluate Gibbs Free Energy Change using this online evaluator? To use this online evaluator for Gibbs Free Energy Change, enter Number of Moles of Electron (n_electron) & Electrode Potential of a System (E) and hit the calculate button.

FAQs on Gibbs Free Energy Change

What is the formula to find Gibbs Free Energy Change?

The formula of Gibbs Free Energy Change is expressed as Gibbs Free Energy Change = -Number of Moles of Electron*[Faraday]/Electrode Potential of a System. Here is an example- -0.070564 = -49*[Faraday]/67.

How to calculate Gibbs Free Energy Change?

With Number of Moles of Electron (n_electron) & Electrode Potential of a System (E) we can find Gibbs Free Energy Change using the formula - Gibbs Free Energy Change = -Number of Moles of Electron*[Faraday]/Electrode Potential of a System. This formula also uses Faraday constant .

Can the Gibbs Free Energy Change be negative?

Yes, the Gibbs Free Energy Change, measured in Energy can be negative.

Which unit is used to measure Gibbs Free Energy Change?

Gibbs Free Energy Change is usually measured using the Kilojoule[KJ] for Energy. Joule[KJ], Gigajoule[KJ], Megajoule[KJ] are the few other units in which Gibbs Free Energy Change can be measured.

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Gibbs Free Energy Change Formula

Gibbs Free Energy Change Example

Gibbs Free Energy Change Solution

Gibbs Free Energy Change Formula Elements

Other formulas in Chemical Thermodynamics category

How to Evaluate Gibbs Free Energy Change?

FAQs on Gibbs Free Energy Change

Variable Name