Structures of molecules of two compounds are given below :

(a) Which of the following compounds will have intermolecular hydrogen bonding and which compound is expected to show intramolecular hydrogen bonding?
(b) Which of the above two compounds will show higher melting point?
(c ) Which of the above compounds will form hydrogen bond with water easily and be more soluble in it?

Explanation

(a) Compound I will form intermolecular hydrogen bonding because `NO_(2)` and `OH` groups are close together.
Compound II will form intermolecular hydrogen bonding.

(b) Compound II will have higher melting point because during intermolecular hydrogen bond, more and more molecules are joined together through hydrogen bond formation.
(c) Because of intramolecular hydrogen bonding compound I will not be able to form hydrogen bonds with water. Therefore, compound I will be less soluble in water. On the other hand, compound II can form hydrogen bonds with water more easily and therefore, will be soluble in water.