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Spontaneous Reactions and Relation to Delta G°

Posted: Sun Feb 04, 2018 8:18 pm
by Kathleen Vidanes 1E
If a reaction is spontaneous, why does that imply that Delta G°of the reaction is positive?

Re: Spontaneous Reactions and Relation to Delta G°

Posted: Sun Feb 04, 2018 8:24 pm
by Rucha Kulkarni 2A
Delta G is negative for spontaneous reactions.
If you see the equation for delta G: delta G(system)=delta H(system)-T*delta S
The sign for delta G is the opposite for delta S of the system
And since delta S has to be positive for spontaneous, delta G is negative.