Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solutions

Question:

Out of the following $1.0\text{ M}$ aqueous solutions, which one will show the largest freezing point depression?

Options:

$\text{NaCl}$

$\text{Na}_2\text{SO}_4$

$\text{C}_6\text{H}_{12}\text{O}_6$

$\text{Al}_2(\text{SO}_4)_3$

Correct Answer:

$\text{Al}_2(\text{SO}_4)_3$

Explanation:

The correct answer is Option (4) → $\text{Al}_2(\text{SO}_4)_3$ ##

Because it generatees higher number of ions after dissociation.

$\text{Al}_2(\text{SO}_4)_3 \rightarrow 2\text{Al}^{3+} + 3\text{SO}_4^{2-}$

$2 + 3 = 5$