and 
in the given graph are
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Here, 
Total pressure of the solution.
where, 
and 
is the partial pressure of component 1 and 2 respectively.
mole fraction of component 2 in the liquid phase.
mole fraction of component 2 in the vapour phase.
When mole fraction of component 2 in the liquid phase is 0 then mole fraction of component 2 in the vapour phase is also 0 which means the liquid is pure of component 1 only. Hence, 
.
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