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MHT CET20242 May 2024Morning ShiftChemistrySolutionsActual

A solution of non volatile solute is obtained by dissolving 2 g in 50 g benzene. Calculate the vapour pressure of solution if vapour pressure of pure benzene is 640 mmHg at 25^ C . [mol. mass of benzene =78 ~g ~mol ⁻¹ , mol. mass of solute .=64 ~g ~mol ⁻¹ ]

Options

  1. A600.21 mm Hg
  2. B604.52 mm Hg
  3. C608.64 mm Hg
  4. D612.83 mm Hg

Correct answer

C. 608.64 mm Hg

Step-by-step solution

aligned P P ^0 = & P ^0- P P ^0 = x ₂= W ₂ M ₁ ~W ₁ M ₂ 640- P 640 & = 2 78 50 64 640- P & =640 0.048 P & =640-31.2 P & =608.8 ~mm Hg aligned

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