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Question: Which one of the following aqueous solutions will exhibit highest boiling point ?...

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

A

0.01 M Na2SO4

B

0.01 M KNO3

C

0.015 M urea

D

0.015 M glucose

Answer

0.01 M Na2SO4

Explanation

Solution

Elevation in boiling point is a colligative property which depends upon the number of solute particles. Greater the number of solute particles in a solution, higher the extent of elevation in boiling point.

Na2SO4→2Na++SO42−Na_{2}SO_{4} \rightarrow 2Na^{+} + SO_{4}^{2 -}