1.

The vapour pressure of solution and pure solvent P and P_(0) resp. If P/P_(0) is 0.15. Then the mole fraction of the solute in the solution is

Answer»

<P>0.85
0.15
`1//0.15`
`1//0.85`

SOLUTION :`X_(2)=(P_(1)^(0)-P)/(P_(1)^(0))`
`= 1-P_(X)/P_(1)^(0)=1-0.15=0.85`


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