In what time (in min), the partial pressure of acetone is 1200 torr? — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

According to stoichiometry, 1 mole of DTBP produces 2 moles of acetone. For P_acetone to be 1200 torr, the reacted P_DTBP must be 1200 / 2 = 600 torr. Remaining P_DTBP = 800 - 600 = 200 torr. This is 1/4th of the initial amount (2 half-lives). Time = 2 × 80 = 160 min. Therefore, correct answer is B.