Which of the following solutions will have the lowest vapour pressure

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0.1M NaCl

0.1 M $B a C l_{2}$

0.1 M $A l_{2} {(S O_{4})}_{3}$

0.1M Glucose

answer is D.

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Detailed Solution

Colligative property is a decrease in vapour pressure. The vapour pressure decreases as the number of particles in the solution increases. Because it contains the most ions, it has the lowest vapour pressure.

So the required answer is option D) 0.1 M $A l_{2} {(S O_{4})}_{3}$ .

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