question_answer

If \[{{P}^{o}}\] and \[P\] are the vapour pressure of a solvent and its solution respectively  and \[{{N}_{1}}\] and \[{{N}_{2}}\] are the mole fractions of the solvent and solute respectively, then correct relation is

A)                 \[P={{P}^{o}}{{N}_{1}}\]             

B)                 \[P={{P}^{o}}{{N}_{2}}\]

C)                 \[{{P}^{o}}=P\,{{N}_{2}}\]           

D)                 \[P={{P}^{o}}\,({{N}_{1}}/{{N}_{2}})\]