filter
  • Subject:

    ...

  • Topic:

    ...

The vapour pressure of pure liquid solvent A is 0.80 atm.

When a non-volitile substance B is added to the solvent, its vapour pressure drops to 0.60 atm. mole fraction of the somponent B in the solution is-

(a) 0.50

(b) 0.75

(c) 0.40

(d) 0.25