Carboxylic Acid Essay
When a carboxylic acid and alcohol was being mixed an ester was formed. In this first reaction (part A) the acid used was salicyclic acid while the alcohol that was used was methyl alcohol. A small amount of concentrated sulphuric acid about 3-4 drops was added and used as a catylst. Sulphuric acid helps to remove the water from the products formed. The mixture was placed in a water bath (90ºC) for 10 minutes to allow the reaction to be completed. After the reaction has being completed, the test tube was removed and allowed to be cooled. The alcohol (methyl alcohol) loses OH while the carboxylic acid (salicyclic acid) loses a H. The method which is used in this experiment is only suitable for preparing small amounts of ester. The ester which is formed also can only be categorized by odour.
After it has cooled, the fumes was carefully walf by passing our hand over the top of the tube towards our
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In the synthesis of Methyl Salicylate (Wintergreen Oil),it is found that it gives off a cool smell that closely resembles wintergreen oil. Salicylic acid has an electrophilic carbon as part of its carboxylic acid functional group. Thus, salicylic acid can react with nucleophilic molecules like methyl alcohol. The acid catalyst, sulphuric acid, is meant to lower the activation energy for the elimination of water from the intermediate.This reaction is not necessarily vitally important reaction, but does produce an interesting product nevertheless.
In the synthesis of Ethyl butyrate (Strawberry) it is found that it gives of a sweet smell that closely resembles a strawberry. Butyric acid also has an electrophilic carbon as part of its carboxylic acid functional group. Thus, the butyric acid can react with nucleophilic molecules like ethyl alcohol. The acid catalyst, sulphuric acid, is again meant to lower the activation energy for the elimination of water from the intermediate. This reaction is also not vitally
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