Question

vii. Which of the following solutions will
have higher freezing point depression
and why?
a. 0.1 m NaCl b. 0.05 m Al,(SO),​

Answer 1

T

f

=iK

f

m

Depression in freezing point will be maximum for the compound having maximum van't Hoff factor i which is maximum for Al

2

(SO

4

)

3

which furnishes 5 ions in the solution, therefore i=5 hence, it will have maximum depression in freezing point in case of the same concentration.

Here, in case of Al

2

SO

4

and NaCl, Al

2

SO

4

have higher i×C value