Chemical Kinetics and Nuclear ChemistryMedium

Question

The values of enthalpies of reactants and products are x and y J/mol, respectively. If the activation energy for the backward reaction is z J/mol, then the activation energy for forward reaction will be (in J/ mol)

Options

A.x − y − z
B.x − y + z
C.y − x − z
D.y − x + z

Solution

$\Delta H = E_{af} - E_{ab} \Rightarrow y - x = E_{af} - z \Rightarrow E_{af} = y - x + z$

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