At 80°C, the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B'…

Chemistry · NEET · NTA ExamsSolutions

At 80°C, the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B' is 1000 mm Hg.  If a mixture solution of 'A' and 'B' boils at 80°C and 1 atm pressure the amount of 'A' in the mixture is:

(1 atm = 760 mm Hg)

  1. 52 mole per cent
  2. 34 mole per cent
  3. 48 mole per cent
  4. 50 mole per cent

Answer

(B) 34 mole per cent

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