Laboratory preparation of ethyl acetate?

I. Device diagram for the preparation of ethyl acetate:

II. Experimental operation:

1. Chemical formula for the preparation of ethyl acetate:

CH3COOH+CH3CH2OH=(concentrated sulfuric acid,heated)CH3COOC2H5+H2O(reversible reaction)

2. Specific experimental steps:

1) In accordance with the experimental requirements of the correct device experimental apparatus

2), to the large test tube filled with broken ceramic (to prevent boiling)

3), to the large test tube to add the appropriate amount of (about two milliliters) anhydrous ethanol

4), while shaking while adding 2 ml of concentrated sulfuric acid (shaking) and 2 ml of acetic acid

5), to the other test tube to add saturated sodium carbonate solution

5), to another test tube

6), to add the saturated sodium carbonate solution < /p>

6), connected to the experimental device (the catheter can not be inserted into the sodium carbonate solution in the catheter mouth and keep a certain distance from the liquid surface to prevent backsiphonage)

7), ignite the alcohol lamp, heating the test tube to boiling

8), to be a certain amount of test tube to collect the product to stop the heating, withdrawal of the test tube b and vigorously shake, and then leave to be stratified, separated out of the layer of ethyl acetate, washed, dried. Ethyl acetate was then prepared. At the end of the experiment, the device will be washed clean

Three, the device through the steam conduit can not be inserted in the saturated sodium carbonate solution Purpose:

To prevent uneven heating, resulting in the Na2CO3 solution back into the test tube heating the reactants.