question_answer

Consider an endothermic reaction\[X\to Y\]with the activation energies\[{{E}_{b}}\]and\[{{E}_{f}}\]for the backward and forward reactions respectively. In general     AIEEE  Solved  Paper-2005

A) there is no definite relation between\[{{E}_{b}}\]and \[{{E}_{f}}\]

B) \[{{E}_{b}}={{E}_{f}}\]

C) \[{{E}_{b}}>{{E}_{f}}\]

D) \[{{E}_{b}}<{{E}_{f}}\]

Correct Answer: D

Solution :

 is an endothermic reaction energy of activation of backward reaction energy of activation of forward reaction heat of reaction Thus,       Thus,