Question

$C_2{H}_{5}OH\stackrel{Cu/{300}^{o}C}{\to }X$

In the above reaction, the molecular formula of $X$ is:

• A. $C_4{H}_{6}O$
• B. $C_4{H}_{10}O$
• C. $C_2{H}_{4}O$
• D. $C_2{H}_{6}O$

Answer 1

The correct option is C $C_2{H}_{4}O$

Ethanol vapours on being passed over heated $Cu$, it forms acetaldehyde.
The reaction is:
$C_2{H}_{5}OH\stackrel{Cu/{300}^{o}C}{\to }C{H}_{3}CHO+H_2$
Aldehyde formed has a formula of $C_2{H}_{4}O$
Hence option C is correct.