Organic Chemistry
Organic Chemistry
6th Edition
ISBN: 9781936221349
Author: Marc Loudon, Jim Parise
Publisher: W. H. Freeman
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Chapter 20, Problem 20.49AP
Interpretation Introduction

(a)

Interpretation:

Two successive ionizations reactions of the squaric acid are to be stated and each reaction is to be labeled with the appropriate pKa value.

Concept introduction:

The pKa value of the acid is known as acid dissociation constant. It tells about the extent of dissociation of acid. Lower is the pKa value of the acid, higher is the extent of dissociation of the acid.

Interpretation Introduction

(b)

Interpretation:

An explanation as to why the squaric is much more acidic than the most of the enols is to be stated.

Concept introduction:

The pKa value of the acid is known as acid dissociation constant. It tells about the extent of dissociation of acid. Lower is the pKa value of the acid, higher is the extent of dissociation of the acid.

Interpretation Introduction

(c)

Interpretation:

The structure of products obtained when squaric acid reacts with excess SOCl2, and with ethanol solvent in the presence of an acid catalyst are to be stated.

Concept introduction:

The nucleophilic substitution reactions are the reactions in which a nucleophile attacks at the electrophilic carbon centre. The rate of reaction depends upon the nucleophilicity and concentration of the nucleophile.

The SN2 reaction is a nucleophilic substitution bimolecular reaction in which the addition of nucleophile and elimination of a leaving group takes place simultaneously. The rate of reaction depends upon the reactants in the rate law equation.

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