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The elevation of boiling point and depression of freezing point of a certain solution of a monobasic acid HA in benzene are T _b and T _f , respectively. HA exists usually as a monomer, but it dissociates into ions (with degree of dissociation ) at the boiling point T _b of the solution, whereas at the freezing point T _f of the solution, HA exists as (HA) n_n with a fixed value of n . The molal boiling point elevati

Options

  1. An= [ T _b ~K _f(1+ ) ] / ( T _f ~K _b )
  2. Bn= [ T _b ~K _b(1+ ) ] / ( T _f ~K _f )
  3. Cn= ( T _b ~K _f ) / [ T _f ~K _b(1+ ) ]
  4. Dn= ( T _b ~K _b ) / [ T _f ~K _f(1+ ) ]

Correct answer

C. n= ( T _b ~K _f ) / [ T _f ~K _b(1+ ) ]

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