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In which of the following, \( \mathrm{E}_{\mathrm{a}} \) for backward reaction is greater than \( \mathrm{E}_{\mathrm{a}} \) for forward reaction ?
\( \mathrm{P} \)
(A) \( \mathrm{a} \stackrel{\mathrm{E}_{\mathrm{a}}=50 \mathrm{kcal}}{\longrightarrow} \mathrm{b} \Delta \mathrm{H}=-10 \mathrm{kcal} \)
W
(B) \( \mathrm{a} \stackrel{\mathrm{E}_{\mathrm{a}}=60 \mathrm{kcal}}{\longrightarrow} \mathrm{b} \Delta \mathrm{H}=-20 \mathrm{kcal} \)
(C) \( \mathrm{a} \stackrel{\mathrm{E}_{\mathrm{a}}=50 \mathrm{kcal}}{\longrightarrow} \mathrm{b} \Delta \mathrm{H}=+10 \mathrm{kcal} \)
(D) \( \mathrm{a} \stackrel{\mathrm{E}_{\mathrm{a}}=60 \mathrm{kcal}}{\longrightarrow} \mathrm{b} \Delta \mathrm{H}=+20 \mathrm{kcal} \)
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