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The potential energy diagram for a reaction $R \rightarrow P$ is given in the figure. $\Delta H^{\circ}$ of the reaction corresponds to the energy

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Verified Answer
The correct answer is:
$c$
$\Delta H=$ activation energy of forward reaction - activation energy of backward reaction
$$
\therefore \quad \Delta H=b-a=c \text {. }
$$
$$
\therefore \quad \Delta H=b-a=c \text {. }
$$
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