The results obtained from the experiment performed for the preparation of aspirin by the student needs to be explained if water bath at 90 o C is used instead of 50 o C . Also, on testing the final product with ferric chloride, the test result is negative that is no phenol is present but the melting point pf the dry product is between 122-125 o C . Concept Introduction : The preparation of aspirin takes place by the reaction of salicylic acid and acetic anhydride represented as follows: The -OH group of the salicylic acid reacts with acetic anhydride to form ester thus; the formation of aspirin is an esterification reaction.

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Chapter 8, Problem 6Q

Interpretation Introduction

Interpretation:

The results obtained from the experiment performed for the preparation of aspirin by the student needs to be explained if water bath at 90 oC is used instead of 50 oC. Also, on testing the final product with ferric chloride, the test result is negative that is no phenol is present but the melting point pf the dry product is between 122-125 oC.

Concept Introduction:

The preparation of aspirin takes place by the reaction of salicylic acid and acetic anhydride represented as follows:

The -OH group of the salicylic acid reacts with acetic anhydride to form ester thus; the formation of aspirin is an esterification reaction.

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