Hydrogen bonding plays a central role in the following phenomena :

Engineering

Chemistry

Hydrogen Bonding

Boiling point

Vapour Pressure

Question

Hydrogen bonding plays a central role in the following phenomena :

Dimerisation of acetic acid in benzene.

Formic acid is more acidic than acetic acid.

Higher Lewis basicity of primary amines than tertiary amines in aqueous solutions

Ice floats in water.

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[A] Due to the intermolecular hydrogen bonding it forms cage like structure so effective volume increases and Ice floats in water.

[B] Higher Lewis basicity of primary amines than tertiary amines in aqueous solutions due to the more hydration in primary amine

[C] Formic acid is more acidic than acetic acid due to +I effect of CH₃– group in CH₃COOH

[D] It exist as a dimeric form due to the formation of intermolecular hydrogen bond.