Question

1 mol each of following solutes are taken in 5 mol water,
(a) $NaCl$
(b)$K_{2}SO_{4}$
(c) $Na_{3}PO_{4}$
(d) glucose
Assuming 100% ionisation of the electrolyte, relative decrease in vapour pressure will be in order:

• A. $A<\,B<\,C<\,D $
• B. $D<\,C<\, B<\,A$
• C. $D <\,A <\,B<\,C$
• D. equal

Answer 1

Answer: (C)

More is the value of vant Hoff’s factor, more will be RLVP