See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

    A g B g 3C g 4D g    100 – x x 3x 4x After one half-life, 100 – x = 50 x = 50 Total pressure after one half-life = (100 - x) + x + 3x + 4x = 100 + 7x = 100 + 7  50 = 450 mm of Hg