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Let the vapour pressure of a liquid be P₁ and P₂ at two different temperatures T₁ and T₂ , respectively. They are related by an equation given by ( P₂ P₁ )= ( H R ) [ ( 1 T₁ )- ( 1 T₂ ) ] where, H represents the heat of vaporisation, R is the ideal gas constant. Assume, R=2 cal / mol / K , H for water is equal to 540 cal / g , and P denotes the vapour pressure of water at 450 K . The value of ( P ) is close to

Options

  1. A2.23
  2. B0.12
  3. C10.8
  4. D0.6

Correct answer

A. 2.23

Step-by-step solution

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