See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

   A g B s 2C g   1 2 t 20min  No. of half lives 60 3 20   Pressure of A after 60 min n 200 2 3 200 25mm 2   Pressure of C after 60 min = 175  2 = 350 mm Total pressure = A C P P 25 350 375    