Consider the following molecules and statements related to them :

Question:

Consider the following molecules and statements related to them :

(a) (B) is more likely to be crystalline than (A)

(b) (B) has higher boiling point than (A)

(c) (B) dissolves more readily than (A) in water

Identify the correct option from below :

  1. (a) and (b) are true

  2. (a) and (c) are true

  3. only (a) is true

  4. (a), (b) and (c) are true


Correct Option: , 4

Solution:

Molecule (A) shows intramolecular H-bonding while molecule (B) shows intermolecular H-bonding. Due to presence of intermolecular H-bonding it has more b. pt. than molecule (A). Molecule (B) also shows intermolecule H-bonding with water which makes it more soluble than A.

(B) is crystalline solid while (A) is liquid at room tempertature because of weaker intramolecular hydrogen bonding.

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