Which one is not correct mathematical equation for Raoult's law ? (here {\P}_{ {\T}}= Total vapour pressure of solution) {\P}_{ {\A}}^{\circ} & {\P}_{ {\B}}^{\circ}= Vapour pressure of pure liquid {\A} & B respectively \chi_{ {\A}} & \chi_{ {\B}}= mole fraction of liquid {\A} & liquid {\B} respectively {\Y}_{ {\A}}= vapour phase mole fraction of liquid {\A}

Correct Answer is : PB(1−χB)=PB∘

{\P}_{ {\T}}= {\P}_{ {\A}}^{\circ} (1-\chi_{ {\B}}) + {\P}_{ {\B}}^{\circ} \chi_{ {\B}}

{\P}_{ {\A}}= {\P}_{ {\A}}^{\circ} \chi_{ {\A}}

{\P}_{ {\A}}= {\P}_{ {\T}} {\Y}_{ {\A}}

{P_B}/{ (1-\chi_{ {\B}}) }= {\P}_{ {\B}}^{\circ}

NEET 2023 Model Paper 2

Question : 91 of 200

Marks: +1, -0

Which one is not correct mathematical equation for Raoult's law ? (here PT= Total vapour pressure of solution)
PA∘&PB∘= Vapour pressure of pure liquid A& B respectively
χA&χB= mole fraction of liquid A& liquid B respectively
YA= vapour phase mole fraction of liquid A

PT=PA∘(1−χB)+PB∘χB
PA=PA∘χA
PA=PTYA
‌
PB
(1−χB)
=PB∘

Validate

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