Chemistry / Unit 11 Chem 2130 short lesson, about 20 seconds
ΔG° Relates to K
Captions available
The idea
At equilibrium, ΔG equals zero and Q equals K, reducing the nonstandard free energy expression to ΔG° = −RT ln K, linking standard free energy change directly to K.
In practice
A large negative ΔG° corresponds to a large K, an equilibrium mixture favoring products heavily.
Where people slip
This equation uses K itself, not Q — substituting a nonequilibrium Q gives a meaningless result.
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