Question

26. Read the following passage and answer the following questions:
Hydrogen bonding influences the properties of substances, particularly physical characteristics to a
large extant. Water is known in liquid state at ordinary atmospheric conditions on account of
hydrogen bonding. The melting point of p-nitrophenol is 114°C while that of o-nitrophenol is 45°C
Both ortho- and para- phenols involve hydrogen bonding of different nature,
(i) Which nitrophenol does involve chelation in its molecule?
(ii) Explain why p-nitrophenol has higher boiling point than o-nitrophenol?
(iii) How many hydrogen bonds are possible with one molecule of water? ​

Answer 1

Answer:

Thus we generally expect small molecules to form gases or liquids, and large ones to ... Water's large dipole moment leads to hydrogen bonding ... Water has long been known to exhibit many physical properties that distinguish it ... These plots of the boiling points of the covalent hydrides of the elements