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How is Diethyl Ether Prepared by Continuous Etherification Process? - Chemistry

How is diethyl ether prepared by continuous etherification process?

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When an excess of ethyl alcohol is distilled with concentrated H2SO4 at 413 K (140 °C), diethyl ether is formed.
This reaction takes place in two steps:

Step-I: Formation of ethyl hydrogen sulphate:

When excess of ethyl alcohol is heated with concentrated H2SO4, ethyl hydrogen sulphate is obtained.


Ethyl alcohol   Conc.sulphuric acid           Ethyl hydrogen sulphate

Step-II: Formation of diethyl ether: Ethyl hydrogen sulphate then reacts with excess of ethyl alcohol at 413 K and forms diethyl ether.


Ethyl hydrogen                   Ethyl                                 Diethyl ether
sulphate                            Alcohol               

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