First slide

General discussion of solutions

Question

Which of the following will have the lowest vapour pressure

Moderate

A

O. l M KCl solution
B

O. l M urea solution
C

0.l M ${Na}_{2} {SO}_{4}$ solution
D

0.l M K₄Fe(CN)₆solution

Solution

$K_{4} [Fe (CN)_{6}]$ gives maximum ions. Hence it have lowest vapour pressure.

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