I: \[{{E}_{a}}=20\,kJ\,mo{{l}^{-1}},\Delta H=-60\,kJ\,mo{{l}^{-1}}\] |
II: \[{{E}_{a}}=10\,kJ\,mo{{l}^{-1}},\Delta H=-20\,kJ\,mo{{l}^{-1}}\] |
III: \[{{E}_{a}}=40\,kJ\,mo{{l}^{-1}},\Delta H=+15\,kJ\,mo{{l}^{-1}}\] |
A)
Fastest Slowest I II
B)
Fastest Slowest II III
C)
Fastest Slowest I III
D) Can?t be predicted.
Correct Answer: B
Solution :
The rate of reaction is decided by value of rate constant which depends on energy of activation not on the value of \[\Delta H,\] definitely the comparison of rate of reactions of backward reactions can be done if \[\Delta H\] values are also given to us.You need to login to perform this action.
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