Solutions Question 18
Question: Which of the following solutions in water will have the lowest vapour pressure [Roorkee 2000]
Options:
A) 0.1 M, NaCl
B) 0.1 M, Sucrose
C) 0.1 M, $ BaCl_2 $
D) 0.1 M $ Na_3PO_4 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ Na_3PO_4 $ consist of maximum ions hence it show lowest vapour pressure. $ Na_3PO_4\to 3N{a^{+}}+PO_4^{3-}=4 $ ion.
