Which of the following aqueous solutions has the highest boiling point?

Question

Which of the following aqueous solutions has the highest boiling point? (A)  0.1 M KNO3  (B)  0.1 M Na3PO4  (C)  0.1 M BaCl2  (D)  0.1 M K2SO4

Tardigrade Admin · Accepted Answer

We know that for solutions of different solutes of the same strength, the magnitude colligative property is more for that solute which gives more number of particles.
As, in aqueous solution,

K N O_{3}, N a_{3}, P O_{4}, B a C l_{2}

and

K_{2} S O_{4}

will give

2, 4, 3

and

3

particles (ions) respectively.
Therefore,

N a_{3} P O_{4}

solution will show highest boiling point.

Q. Which of the following aqueous solutions has the highest boiling point?

$0.1 M K N O_{3}$

$0.1 M N a_{3} P O_{4}$

$0.1 M B a C l_{2}$

$0.1 M K_{2} S O_{4}$

Q. Which of the following aqueous solutions has the highest boiling point?

0.1MKNO3​

0.1MNa3​PO4​

0.1MBaCl2​

0.1MK2​SO4​

$0.1 M K N O_{3}$

$0.1 M N a_{3} P O_{4}$

$0.1 M B a C l_{2}$

$0.1 M K_{2} S O_{4}$