1.

For the exothermic reaction \[A+B\to C+D,\text{ }\Delta H\]is the heat of reaction and \[{{E}_{a}}\]is the energy of activation. The energy of activation for the formation of A + B will be

A. \[{{E}_{a}}\]                           
B. \[\Delta H\]
C. \[{{E}_{a}}+\Delta H\]             
D. \[\Delta H-{{E}_{a}}\]
Answer» D. \[\Delta H-{{E}_{a}}\]


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