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Mixture of volatile components A and B has total vapour pressure (in Torr) p=254119  xA , where xA is mole fraction of A in mixture. Hence pA and p Bare (in Torr)

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By Expert Faculty of Sri Chaitanya
a
254, 119
b
119, 254
c
135, 254
d
119, 373

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detailed solution

Correct option is C

Ptotal =P∘ A  XA+P∘B(1−XA)PT=P∘B−XAP∘B−P∘A=254−XA119P∘B=254⇒P∘B−P∘A=119⇒254−119=P∘A∴P∘A=135


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