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25. Quartenary ammonium salts with hydrocarbon chains are used as detergent BECAUSE the presence of hydrophobic tail and ionic head facilitates its detergent action. 26. Hofmann elimination is a reaction between an unsubstituted amide and an alkaline solution of bromine BECAUSE the advantage of Hofmann rearrangement is that it yields pure primary amines 27. Nitriles undergo catalytic hydrogenation or reduction with LIAIH4 to yield primary amines BECAUSE this reaction is a technique for shortening carbon chain in an amine.

25. Quartenary ammonium salts with hydrocarbon chains are used as detergent BECAUSE the presence of hydrophobic tail and ionic head facilitates its detergent action. 26. Hofmann elimination is a reaction between an unsubstituted amide and an alkaline solution of bromine BECAUSE the advantage of Hofmann rearrangement is that it yields pure primary amines 27. Nitriles undergo catalytic hydrogenation or reduction with LIAIH4 to yield primary amines BECAUSE this reaction is a technique for shortening carbon chain in an amine.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Give the reason why it is true or false

25. Quartenary ammonium salts with hydrocarbon chains are used as detergent BECAUSE the presence of hydrophobic tail and ionic head facilitates its detergent action. 26. Hofmann elimination is a reaction between an unsubstituted amide and an alkaline solution of bromine BECAUSE the advantage of Hofmann rearrangement is that it yields pure primary amines 27. Nitriles undergo catalytic hydrogenation or reduction with LIAIH4 to yield primary amines BECAUSE this reaction is a technique for shortening carbon chain in an amine.
Transcribed Image Text:25. Quartenary ammonium salts with hydrocarbon chains are used as detergent BECAUSE the presence of hydrophobic tail and ionic head facilitates its detergent action. 26. Hofmann elimination is a reaction between an unsubstituted amide and an alkaline solution of bromine BECAUSE the advantage of Hofmann rearrangement is that it yields pure primary amines 27. Nitriles undergo catalytic hydrogenation or reduction with LIAIH4 to yield primary amines BECAUSE this reaction is a technique for shortening carbon chain in an amine.
Expert Solution
Step 1

25.  The structure of quaternary ammonium salt is as shown below:

Chemistry homework question answer, step 1, image 1

A detergent contains both hydrophobic and hydrophilic ends.

Hydrophobic part dissolves in the oil or grease and hydrophilic part dissolves in water.

Thus , they can remove the dirt and can act as detergents.

So, the given statement and reason both are true.

Step 2

26.   Hofmann elimination is a reaction in which quaternary ammonium salts can be converted into alkenes by heating with Ag2O.

Chemistry homework question answer, step 2, image 1

Hofmann rearrangement reaction involves the reaction between primary amides with Br2 in presence of NaOH and form primary amines.

Chemistry homework question answer, step 2, image 2

First statement is false, and second statement is true.

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