Q.

Which aqueous solution exhibits highest boiling point?

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0.015 m glucose

0.01 m KNO3

0.015 m urea

0.01 m Na2SO4

answer is D.

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Detailed Solution

Na2SO4 furnishes more particles, i.e., Greater the number of solute particles in the solution, higher the elevation in boiling point. Among the given options sodium sulphate will furnishes more number of particles on dissociation,hence exhibits highest boiling point.∆Tb= Kbm x i∆Tb α i

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