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Hydrogen bonding plays a central role in the following phenomena
(2014 Adv., One or More than Option Correct Type)
  • a)
    ice floats in water
  • b)
    higher Lewis basicity of primary amines than tertiary amines in aqueous solutions
  • c)
    formic acid is more acidic than acetic acid
  • d)
    dimerisation of acetic acid in benzene
Correct answer is option 'A,B,D'. Can you explain this answer?
Verified Answer
Hydrogen bonding plays a central role in the following phenomena(2014 ...
(a) When liquid water changes to ice, there is an air gap inside the cage formed due to intermolecular H-bonding, Thus, volume of ice > volume of water.

Hence, density (ice) < density (water).
Thus ice floats on water - hydrogen bonding plays its role.
(b) In gaseous phase, basicity of 1° < 2° < 3° amines due to increase of electron density at N-atom

But in aqueous (H2O) solvent, RNH2 is stabilised by solvation. Thus, 1° amine is more

basic than 3° amine (3° < T < 2°) amines, 

Dimer due to intermolecular H- bonding.
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Hydrogen bonding plays a central role in the following phenomena(2014 Adv., One or More than Option Correct Type)a)ice floats in waterb)higher Lewis basicity of primary amines than tertiary amines in aqueous solutionsc)formic acid is more acidic than acetic acidd)dimerisation of acetic acid in benzeneCorrect answer is option 'A,B,D'. Can you explain this answer?
Question Description
Hydrogen bonding plays a central role in the following phenomena(2014 Adv., One or More than Option Correct Type)a)ice floats in waterb)higher Lewis basicity of primary amines than tertiary amines in aqueous solutionsc)formic acid is more acidic than acetic acidd)dimerisation of acetic acid in benzeneCorrect answer is option 'A,B,D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Hydrogen bonding plays a central role in the following phenomena(2014 Adv., One or More than Option Correct Type)a)ice floats in waterb)higher Lewis basicity of primary amines than tertiary amines in aqueous solutionsc)formic acid is more acidic than acetic acidd)dimerisation of acetic acid in benzeneCorrect answer is option 'A,B,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Hydrogen bonding plays a central role in the following phenomena(2014 Adv., One or More than Option Correct Type)a)ice floats in waterb)higher Lewis basicity of primary amines than tertiary amines in aqueous solutionsc)formic acid is more acidic than acetic acidd)dimerisation of acetic acid in benzeneCorrect answer is option 'A,B,D'. Can you explain this answer?.
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