The two nitrogen atoms in nicotine that is converted into salts by the reaction with 1 mol of HCl should be identified. A structural formula of the salt should also be determined. Concept Introduction: Nicotine is an alkaloid containing pyridine and a pyrrolidine nitrogenous ring. Nicotine reacts with hydrochloric acid and forms water-soluble salt. Nicotine is a dibasic acid because it contains two nitrogen atoms in its structure. There are two rings, pyridine and pyrrolidine, present in the nicotine molecule. The pK a value of pyridine ring and pyrrolidine ring is 3.12 and 8.02 respectively. The structural formulas are as below: Nicotine.

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Chapter 16, Problem 16.37P

Interpretation Introduction

Interpretation:

The two nitrogen atoms in nicotine that is converted into salts by the reaction with 1 mol of HCl should be identified. A structural formula of the salt should also be determined.

Concept Introduction:

Nicotine is an alkaloid containing pyridine and a pyrrolidine nitrogenous ring. Nicotine reacts with hydrochloric acid and forms water-soluble salt.

Nicotine is a dibasic acid because it contains two nitrogen atoms in its structure. There are two rings, pyridine and pyrrolidine, present in the nicotine molecule. The pK_a value of pyridine ring and pyrrolidine ring is 3.12 and 8.02 respectively.

The structural formulas are as below:

Nicotine.

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