Why Is Pyrrole Much Less Basic Than Pyridine

question 26

Multiple Choice

Why is pyrrole much less basic than pyridine?

• A) The lone pair of electrons in pyrrole is located on an sp² orbital.
• B) The lone pair of electrons in pyrrole is part of the aromatic  system.
• C) The lone pair of electrons in pyrrole is not part of the aromatic  system.
• D) The pK_a of the conjugate acid of pyrrole is much greater than the conjugate acid of pyridine.

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