How is diethyl ether prepared by continuous etherification process?
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
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