This is according to my text :
Increasing temperature favours elimination over substitution. This is because energy of activation for elimination is higher than that of substitution since higher degree o charges in bonding is involved in elimination reaction. [sic!]
Well I understand why more of Elimination reactions happenelimination occurs at high temperaturetemperatures (I guess this is due to $\triangle\\\\$G$\Delta G$ being more negative due to multiple product formation as well) , but why do Substitutionsubstitution reactions have their yields decreased as temperature goes up?
This is according to the master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$decrease in yield of the substituted products) :
Aren't they supposed to have their output increased as well,as as the activation energy barrier has already passed and rate increases with increase in temperature, Oror am I missing something fundamental here?
Also, what could happen just after the energy barrier is broken for any one of the reactions?