To make ethyl acetate from acetic acid
Now there is a desire to start with acetic acid to make ethyl acetate. Acetic acid is active and has the general nature of acid. To form ethyl acetate, it is necessary to react with ethanol by esterification.
First prepare an appropriate amount of acetic acid and ethanol, put it in a clean flask, and add concentrated sulfuric acid as a catalyst. For concentrated sulfuric acid, the reaction can promote the shift of equilibrium and increase the rate of reaction.
Take the temperature of a water bath or an oil bath and control the temperature to a suitable range. In the meantime, the carboxyl group of acetic acid and the hydroxyl group of ethanol interact and dehydrate, and then form ethyl acetate. The equation is as follows: $CH_3COOH + C_2H_5OH\ underset {\ triangle} {\ overset {concentrated sulfuric acid} {\ rightleftharpoons}} CH_3COOC_2H_5 + H_2O $.
After the reaction is completed, the product is mixed with unsuitable acetic acid, ethanol and catalyst concentrated sulfuric acid. To obtain pure ethyl acetate, it should be placed in a saturated sodium carbonate solution. Sodium carbonate can remove acetic acid, dissolve ethanol, and reduce the solubility of ethyl acetate, which is convenient for separation to obtain pure ethyl acetate.
The method is commonly used in the production of ethyl acetate, and has important value in both work and practice. It can cause ethyl acetate to be used in various applications.