The total pressure, when pressure of 'X' is 700 mm of Hg, is — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

Initial P_x = 800 mm Hg. When P_x = 700 mm Hg, the drop in pressure of X is 100 mm Hg. From stoichiometry 2X → 3Y + 2Z, a drop of 2p in X yields 3p of Y and 2p of Z. Here 2p = 100, so p = 50. P_y formed = 3(50) = 150. P_z formed = 2(50) = 100. Total pressure = 700 (X) + 150 (Y) + 100 (Z) = 950 mm Hg. Therefore, correct answer is C.