Hi everybody from this forum
I've got a problem in understanding the relationship between activation energy and spontaneity and feasibility of a chemical reaction.
I know that spontaneity of a reaction can be determined by:
delta G = delta H - T delta S
if delta G <0, reaction is spontaneous
if delta G <0, reaction is not spontaneous
I also know that -
If Ea is high,
--> reactants: kinetically stable
--> reaction is unlikely to occur
If Ea is low,
--> reactants: kinetically unstable
--> reaction is likely to occur
Besides, I know that the feasibility of a chemical reaction depends of S and delta H.
However, I feel confused after studying the concepts above:
is feasibility = spontaneity of a reaction?and is Ea related to feasibility / spontaneity of a reaction?I guess Ea is not related to feasibility, because once Ea is provided, the reaction is feasible actually.
But at the same time, I think because the magnitude of Ea determines whether the reaction is likely to occur, so it should be related to the feasibility of the reaction.
Can you correct me?
If Ea will control the feasibility/ spontaneity of a reaction, how come it is not included in the equation delta G = delta H - T delta S?
thanks a lot!