A urst order gaseous reaction is 25% complete in 30 minutes at 227°C and in 10 minutes at 237°C. The activation energy of the reaction is closet to (R -2 cal K mol) (a) 27 kcal mol (b) 110 keal mol (c) 55 kcal mol (d) 5.5 kcal mol
check similar question https://doubtnut.com/question-answer-chemistry/a-first-order-reaction-is-50-complete-in-30-minutes-at-27c-and-in-10-minutes-at-47c-calculate-the-re-30710556