See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

23. AC On decreasing pressure concentration decreases so equilibrium shift in forward direction so degree of dissociation increases but in net concentration of all decreases Molecular wt. of PCl5 = (1 + ) Molecular wt. of mixture 5 . (1 ).2. . PCl mix M V D   5 . mi . 2(1 ) PCl M V D x   , . mi so V D x   AITS-FT-XI (Paper-1)-PCM (Sol.)-JEE(Advanced)/18 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 7