Question

Which of the following compound can be used to prepare ethene from ethyl alcohol?

• A. $A{l}_2{O}_3$
• B. $H_{2}S{O}_4$
• C. $CaO$
• D. Both $A$ and $B$

Answer 1

The correct option is D Both $A$ and $B$

Industrial preparation of Ethene:

Ethyl alcohol on heating with $conc.H_{2}S{O}_4$ at ${170}^{\circ }$ or with Alumina at ${350}^{\circ }C$ gives Ethylene.

$C{H}_{3}C{H}_{2}OH\underset{Alumina{350}^{\circ }C}{\overset{conc.H_{2}S{O}_4{170}^{\circ }C}{\to }}C{H}_2=C{H}_2$

This is dehydration reaction where Ethene is prepared from both $H_{2}S{O}_4$ and $A{l}_2{O}_3$