At $350 \mathrm{~K}$, the vapour pressure of pure liquids $A$ and $B$ are $450 \mathrm{~mm}$ and $700…

At $350 \mathrm{~K}$, the vapour pressure of pure liquids $A$ and $B$ are $450 \mathrm{~mm}$ and $700 \mathrm{~mm}$ respectively. If the total vapour pressure of liquid mixture is $600 \mathrm{~mm}$ of $\mathrm{Hg}$, the mole fractions of $\mathrm{A}$ and $B$ in vapour phase respectively are :
  1. $0.4,0.6$
  2. $0.6,0.4$
  3. $0.3,0.7$
  4. $0.7,0.3$

Solution

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Asked in: AP EAMCET 2017 (24 Apr Shift 2)

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