Question

When ethyl alcohol is heated with conc. H\(_2\)SO\(_4\), product obtained is

• A. CH\(_3\)COOC\(_2\)H\(_5\)
• B. C\(_2\)H\(_2\)
• C. C\(_2\)H\(_6\)
• D. C\(_2\)H\(_4\)

Hint:

Ethanol + conc. H\(_2\)SO\(_4\) on heating gives ethene by dehydration.

Answer 1

The Correct Option is D

Step 1: Reaction of ethanol with conc. H\(_2\)SO\(_4\).
Concentrated sulphuric acid acts as a dehydrating agent.
Step 2: Dehydration of ethanol.
On heating ethanol at about \(443K\), it loses water and forms ethene.
\[ CH_3CH_2OH \xrightarrow{conc.\,H_2SO_4,\,443K} CH_2=CH_2 + H_2O \]
Step 3: Identify product.
The product is ethene \(C_2H_4\).
Final Answer:
\[ \boxed{C_2H_4} \]