Q.

Vapour pressure of chloroform (CHCI3) and dichloromethane (CH2Cl2) at 25o C are 200 mm of Hg and 41.5 mm of Hg respectively. Vapour pressure of the solution obtained by mixing 25.5 g of CHCl3 and 40 g of CH2Cl2 at the same temperature will be (Molecular mass of CHCI3 = 119.5 u and molecular mass of CH2Cl2 - 85 u)

see full answer

Want to Fund your own JEE / NEET / Foundation preparation ??

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya

a

173.9 mm Hg

b

615.0 mm Hg

c

347.9 mm Hg

d

90.63 mm Hg

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Number of moles of CHCI3,                nA=wM=25.5119.5=0.213Number of moles of CH2Cl2               nB=4085=0.47Mole fraction of CHCI3,             xA=nAnA+nB=0.2130.683=0.31Mole fraction of CH2Cl2              xB=1−xA=1−0.31=0.69ptotal =pAxA+pBxB         =200×0.31+41.5×0.693         =62+28.63=90.63mmHg
Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon