Gibbs Free Energy

$\Delta G^{\circ}= \Delta H^{\circ} - T \Delta S^{\circ}$

$\Delta G^{\circ}= -RT\ln K$

$\Delta G^{\circ}= \sum \Delta G_{f}^{\circ}(products) - \sum \Delta G_{f}^{\circ}(reactants)$

Tiffany Cao 1D
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Gibbs Free Energy

What exactly does Gibbs Free Energy measure?

Sabrina Fardeheb 2B
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Re: Gibbs Free Energy

It measures the energy that is freely available to do work.

Hena Sihota 1L
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Re: Gibbs Free Energy

The textbook defines Gibbs free energy as the energy of a system that is free to do work at constant temperature and pressure. The direction of spontaneous change at constant pressure and temperature is the direction of decreasing Gibbs free energy.

Isabella Sanzi 2E
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Re: Gibbs Free Energy

I think that Gibbs free energy isn't necessarily a measurement, but a calculation to describe the energy of a system available to do work based on a system's entropy, enthalpy, and temperature. I believe Professor Lavelle mentioned in class you can't explicitly measure free energy-just to clarify. Hope this helps!