Question

Question 09
Which of the following aqueous solutions should have the highest boiling point?
(a) 1.0 M NaOH (b) $1.0MN{a}_{2}S{O}_4$
(C)$1.0MN{H}_{4}N{O}_3$ (d) $1.0MKN{O}_3$

Answer 1

(b) As we know greater the value of van't Holf fctor higher will be the elevation in boiling point and hence higher will be the boiling point of solution.
$\begin{array}{cc}Solution& va{n}^{\prime }tHofffactor\left(i\right)\\ 1.0MNaOH& 2\\ 1.0MN{a}_{2}S{O}_4& 3\\ 1.0MN{H}_{4}N{O}_3& 2\\ 1.0MKN{O}_3& 2\end{array}$
Hence, $1.0MN{a}_{2}S{O}_4$ has highest value of boiling point.