Solutions Question 51
Question: The boiling point of a solution of 0.1050 gm of a substance in 15.84 gram of ether was found to be $ 100^{o}C $ higher than that of pure ether. What is the molecular weight of the substance [Molecular elevation constant of ether per 100 g = 21.6] [UPSEAT 2001]
Options:
A) 144.50
B) 143.18
C) 140.28
D) 146.66
Show Answer
Answer:
Correct Answer: B
Solution:
$ m=\frac{K_{b}\times w\times 1000}{\Delta T_{b}\times W}=143.18 $
