A) can be less than or more than \[{{E}_{a}}\]
B) is always double of \[{{E}_{a}}\]
C) is negative of \[{{E}_{a}}\]
D) is always less than \[{{E}_{a}}\]
Correct Answer: A
Solution :
| [a] The energy of activation of reverse reaction is less than or more than \[{{E}_{a}}\]. |
| Energy of activation of forward reaction. |
| \[\therefore \] \[\Delta H={{({{E}_{a}})}_{F}}-{{({{E}_{a}})}_{R}}\] |
| Because it depends upon the nature of reaction. |
| If \[{{({{E}_{a}})}_{F}}>{{({{E}_{a}})}_{R}}\therefore \] reaction is endothermic |
| or \[{{({{E}_{a}})}_{F}}<{{({{E}_{a}})}_{R}}\therefore \] reaction is exothermic |
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