Question

Name the process for ethanol to ethene conversion and reactants used.

• A. hydrogenation of ethanol in the presence of concentrated $H_{2}S{O}_4.$
• B. dehydration of ethanol in the presence of concentrated $H_{2}S{O}_4.$
• C. oxidation of ethanol in the presence of concentrated $H_{2}S{O}_4.$
• D. reduction of ethanol in the presence of concentrated $H_{2}S{O}_4.$

Answer 1

The correct option is B dehydration of ethanol in the presence of concentrated $H_{2}S{O}_4.$

Ethanol can be converted to ethene as:

$C{H}_{3}C{H}_{2}OH\underset{hot}{\overset{conc.H_{2}S{O}_4}{\to }}C{H}_2=C{H}_2+H_{2}O$

In above reaction, dehydration of ethanol takes place in the presence of concentrated sulphuric acid.
Hence, the correct option is B.