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.



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