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JEE Main 2005
Exam
JEE Main
Year
2005
Subject
Chemistry
Chapter
States of Matter

JEE Main 2005 · Chemistry · States of Matter

Benzene and toluene form nearly ideal solutions. At 20^ C , the...

Benzene and toluene form nearly ideal solutions. At 20∘C20^{\circ} \mathrm{C}, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20∘C20^{\circ} \mathrm{C} for a solution containing 78 g78 \mathrm{~g} of benzene and 46 g46 \mathrm{~g} of toluene in torr is

Options

  1. A50
  2. B25
  3. C37.5
  4. D53.5

Correct answer

A. 50

Step-by-step solution

PB=PB∘×B=75×11.5=50\mathrm{P}_{\mathrm{B}}=\mathrm{P}_{\mathrm{B}}^{\circ} \times \mathrm{B}=75 \times \frac{1}{1.5}=50 torr
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