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Electrochem: The relationship between G, E, and K

Electrochem: The relationship between G, E, and K

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Thermodynamically Favorable
Positive E value

K is greater than 1

Negative G value

Electrical cell potential is greater than zero

Equilibrium constant is greater than one

Free energy is less than zero.

galvanic/voltaic cell

Dead Battery (equilibrium)
E = 0

K = 1

G = 0

Flow of electrons has stopped.

The natural log of K is 0.

Thermodynamically Unfavorable
Negative E value

K is less than 1

Positive G value

Electrical cell potential is less than zero.

Equilibrium constant is less than one.

Free energy is greater than zero.

Electrolytic cell