Solutions Question 107

Question: Vapour pressure of CCl4 at 25oC is 143mm of Hg,0.5,gm of a non-volatile solute (mol. wt. = 65) is dissolved in 100,ml,CCl4 . Find the vapour pressure of the solution (Density of CCl4=1.58,g/cm2 ) [CBSE PMT 1998]

Options:

A) 141.43,mm

B) 94.39,mm

C) 199.34,mm

D) 143.99,mm

Show Answer

Answer:

Correct Answer: A

Solution:

P0PsP0=w×MmW

=1430.5×15465×158×143

=1431.03=141.97,mm .



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