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
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
A. 0.85
B. 0.15
C. `1//0.15`
D. `1//0.85`
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Correct Answer - A
`X_(2)=(P_(1)^(0)-P)/(P_(1)^(0))`
`= 1-P_(x)/P_(1)^(0)=1-0.15=0.85`
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