N 2 O 5 decomposes to NO 2 and O 2 follows the first order kinetics. After 50 minutes, the pressure inside the vessel increases from 50 mm Hg to 87 . 5 mm Hg . The pressure of the gaseous mixture after 100 minutes at constant temperature will be:

Step-by-step solution

            N 2 O 5 → 2 NO 2 + 1 2 O 2 t = 0            50          0         0 t = 50 mins     50 - p 1         2 p 1         p 1 2 t = 100 mins      50 - p 2       2 p 2       &#82