Solutions Question 100
Question: Which of the following liquid pairs shows a positive deviation from Raoult’s law [MP PET 1993; UPSEAT 2001; AIEEE 2004]
Options:
A) Water-nitric acid
B) Benzene-methanol
C) Water-hydrochloric acid
D) Acetone-chloroform
Show Answer
Answer:
Correct Answer: B
Solution:
In solution showing positive type of deviation the partial pressure of each component of solution is greater than the vapour pressure as expected according to Raoul’s law. In solution of methanol & benzene methanol molecules are held together due to hydrogen bonding as shown below.
