A mixture of two immiscible liquids `A` and `B`, having vapour pressure in pure state obeys the following relationship if `chi_(A)` and `chi_(B)` are mole fractions of `A` and `B` in vapour phase over the solution

Options

A. `P'_(A)=P_(M)chi'_(A)`
B. `(P_(A)')/(P_(B)')= (W_(A) xx Mw_(B))/(Mw_(A)xxW_(B))`
C. If `P_(A)' gt P_(B)' then chi'_(A) lt chi_(B)`
D. If `P_(A)' gt P_(B)' then n_(A) lt n_(B)`

Answer

A, B, D

Explanation

For immiscible liquids
`P_(A)'=P_(M).chi_(A)'`,`P_(B)'=P_(M).chi_(B)'`
`:. P_(A)'/P_(B)' = chi_(A)'/chi_(B)'=n_(A)/n_(B) =(W_(A) xx Mw_(B))/(Mw_(A) xx W_(B))`
If `P_(A)' gt P_(B)'`, then `n_(A) gt n_(B)`.