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 incorrect order of boiling point among the following compounds are : (a) (b) (c) (d) (e) (f)
Answer:
Solution:
The number of incorrect boiling point orders is 4.
(a), (d), (f) are incorrect: H₂O₂, H₂O, and H₂O have higher boiling points than H₂O, HF, and CH₃OH respectively, due to more extensive or stronger hydrogen bonding networks.
(b) is incorrect: B(OH)₃ forms an extensive intermolecular hydrogen-bonded polymeric sheet structure, giving it a much higher boiling point than volatile Me₃BO₃.
(c) and (e) are correct: SbH₃ and B(CH₃)₃ have larger molecular sizes and higher molecular masses than NH₃ and BF₃, leading to stronger Van der Waals forces.
