Question:
Alkenes are formed by heating alcohols with conc. H$_2$SO$_4$. The first step in the reaction is:
Alkenes are formed by heating alcohols with conc. H$_2$SO$_4$. The first step in the reaction is:
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In acid-catalyzed dehydration of alcohols, the first step is protonation, which makes the alcohol a better leaving group.
Updated On: Jun 20, 2025
- formation of carbocation
- formation of ester
- protonation of alcohol molecule
- elimination of water
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The Correct Option is C
Solution and Explanation
When alcohols are heated with concentrated H$_2$SO$_4$, the first step involves the protonation of the alcohol molecule, which leads to the formation of a carbocation. This carbocation can then undergo elimination of water to form an alkene. Therefore, the correct first step is the protonation of the alcohol molecule.
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