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Vapour pressure of pure water at 298 K is 23.8 mm Hg. 50 g of urea (NH 2 CONH 2 ) is dissolved in 850 g of water. Calculate the vapour pressure of water for this solution and its Relative lowering.

Options

  1. AVapour pressure is 23.4 mm Hg and Relative lowering is 0.0173
  2. BVapour pressure is 29.8 mm Hg and Relative lowering is 0.0173
  3. CVapour pressure is 23.4 mm Hg and Relative lowering is 0.0369
  4. DVapour pressure is 29.8 mm Hg and Relative lowering is 0.0369

Correct answer

A. Vapour pressure is 23.4 mm Hg and Relative lowering is 0.0173

Step-by-step solution

Correct Option is : (A) Vapour pressure is 23.4 mm Hg and Relative lowering is 0.0173

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