Question bank/NEET UG/Chemistry

NEET UGChemistryModerateNEET 2025

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

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Sol.
ΔTb=iKb×m\Delta T_b = iK_b \times m
ΔTb∝i×m\Delta T_b \propto i \times m
By considering molarity same as molality
(1) 0.01M Urea i×m=1×0.01=0.01i \times m = 1 \times 0.01 = 0.01
(2) 0.01 M KNO3_3 i×m=2×0.01=0.02i \times m = 2 \times 0.01 = 0.02
(3) 0.01M Na2_2SO4_4 i×m=3×0.01=0.03i \times m = 3 \times 0.01 = 0.03
(4) 0.015M C6_6H12_{12}O6_6 i×m=1×0.015=0.015i \times m = 1 \times 0.015 = 0.015
Tb′=Tb∗+ΔTbT'_b = T_b^* + \Delta T_b
Higher the value of (i x m) more will be the boiling point.

Source: geekyrakshit/indian-exam-questions / neet2025-code45

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