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Elimination versus Substitution Why is the yield of substitution reactions decreased at higher temperatures?

This is according to my text :

enter image description here

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)  :   

enter image description here

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?

Elimination versus Substitution at higher temperatures

This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature(I guess this is due to $\triangle\\\\$G being more negative due to multiple product formation as well)  , but why do Substitution reactions have their yields decreased as temperature goes up?

This is according to master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$ in yield of the substituted products)  :  enter image description here

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

Why is the yield of substitution reactions decreased at higher temperatures?

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 elimination occurs at high temperatures (I guess this is due to $\Delta G$ being more negative due to multiple product formation as well), but why do substitution 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 in yield of the substituted products): 

enter image description here

Aren't they supposed to have their output increased as well, as the activation energy barrier has already passed and rate increases with increase in temperature, or am I missing something fundamental here?

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user73157
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This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature(I guess this is due to $\triangle\\\\$G being more negative due to multiple product formation as well) ,but but why do Substitution reactions have their yields decreased as temperature goes up?

This is according to master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$ in yield of the substituted products) : enter image description here

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature,but why do Substitution reactions have their yields decreased as temperature goes up?

This is according to master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$ in yield of the substituted products) : enter image description here

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature(I guess this is due to $\triangle\\\\$G being more negative due to multiple product formation as well) , but why do Substitution reactions have their yields decreased as temperature goes up?

This is according to master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$ in yield of the substituted products) : enter image description here

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

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user73157
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This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature,but why do Substitution reactions have their yields decreased as temperature goes up?

This is according to master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$ in yield of the substituted products) : enter image description here

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature,but why do Substitution reactions have their yields decreased as temperature goes up?

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

This is according to my text :

enter image description here

Well I understand why more of Elimination reactions happen at high temperature,but why do Substitution reactions have their yields decreased as temperature goes up?

This is according to master of organic chemistry; (Even though it says that there is a relative increase, the graph shows a $decrease$ in yield of the substituted products) : enter image description here

Aren't they supposed to have their output increased as well,as the activation energy barrier has already passed and rate increases with increase in temperature, Or am I missing something fundamental here?

Also, what could happen just after the energy barrier is broken for any one of the reactions?

Source Link
user73157
  • 125
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  • 6
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