Chemistry - CHEMICAL BONDING Question with Solution | TestHub
The intermolecular forces of attraction exist among polar and non polar species which affects melting point, boiling point, solubility and viscosity of covalent compounds.
Number of molecules which consists intermolecular H-bonding.
(a) Chloral
(b) Ortho hydroxy benzaldehyde
(c) Ortho chloro phenol
(d) Orthoboric acid
(e) Sodium bicarbonate (Solid)
(f) Para nitrophenol
Answer:
Solution:
Intermolecular H-bonding occurs between different molecules.
(a) Chloral (CCl₃CHO): No H-bond donor.
(b) Ortho hydroxy benzaldehyde: Intramolecular H-bonding.
(c) Ortho chloro phenol: Intramolecular H-bonding.
(d) Orthoboric acid (H₃BO₃): Forms extensive intermolecular H-bonds.
(e) Sodium bicarbonate (NaHCO₃) (Solid): Forms intermolecular H-bonds.
(f) Para nitrophenol: Forms intermolecular H-bonds.
Thus, (d), (e), and (f) exhibit intermolecular H-bonding.
The final answer is 3.
