Which one of the following aqueous solution will exhibit highest boiling point?

Options

A. `0.01M Na_(2)SO_(4)`
B. `0.015M` glucose
C. `0.015M` urea
D. `0.01M KNO_(3)`

Answer

A

Explanation

Highest b. pt. `rArr` Maximum `Delta T_(B)`
`rArr` Maximum nnumber of particles (ions or molecules) per unit volume in solution.
(A) No. of particles in `0.01 M Na_(2)SO_(4)=3xx0.01 M = 0.03 M`
(B) No. of particles in `0.015 M` glucose `= 0.015 M`
(C ) No. of particle in `0.015 M` urea `= 0.015 M`
(D) No. of particle in `0.01 M KNO_(3) = 0.01xx2=0.02 M`
Thus, choice (A) is correct.