Solutions Question 77
Question: Which of the following aqueous molal solution have highest freezing point [UPSEAT 2000, 01, 02; MNR 1988]
Options:
A) Urea
B) Barium chloride
C) Potassium bromide
D) Aluminum sulphate
Show Answer
Answer:
Correct Answer: A
Solution:
$ KBr={K^{+}}+B{r^{-}}=2 $ ions $ BaCl_2=B{a^{2+}}+2C{l^{-}}=3 $ inos $ Al_2{{(SO_4)}_3}=2A{l^{3+}}+3SO_4^{2-}=5 $ ions \ urea is not ionise hence it is shows highest freezing point.
