Question

Which of the following statement is correct?
Pyrrole is less basic than
pyridine
Pyridine is less basic than
pyrrole
Pyrrole and pyridine show same basic
properties
Pyridine is basic but pyrrole is
not​

Answer 1

Explanation:

pyrrole is less basic than pyridine

Answer 2

Pyrrole is less basic than pyridine.

• Pyridine and pyrrole are heterocyclic aromatic compounds with nitrogen as heteroatom.
• Both the compounds have a single ring but the number of atoms differs. Pyridine has a six-membered whereas pyrrole has a five-membered ring.
• In pyridine there are five carbon atoms and a nitrogen atom in the ring.
• In pyrrole, there are four carbon atoms with a nitrogen atom.
• The basicity of these compounds is due to the presence of lone pair of electrons on a nitrogen atom.
• In pyrrole the lone pair of electrons is a part of the aromatic ring whereas, in pyridine, the lone pair of electrons are free.
• So, pyridine is more basic than pyrrole.