HOW CAN I CALCULATE GIBBS FREE ENERGY?
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Gibbs free energy, denoted G, combines enthalpy and entropy into a single value. The change in free energy, ΔG, is equal to the sum of the enthalpy plus the product of the temperature and entropy of the system.
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there are many formulas for calculating Gibbs energy but two important formulas that are generally repeated over time are
ΔG= ΔH - TΔS
where ΔG= Gibbs free energy
ΔH= enthalpy change
ΔT=temp change
ΔS= entropy change
for a electric cell of standard electric potential E°
ΔG is given as ΔG= -nFE° where n= number of electron and
F= Faraday =96500Coulomb
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