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प्रश्न
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
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उत्तर
In the presence of conc. acids such as H3PO4 and H2SO4 alcohols undergo dehydration to yield alkenes.
\[\ce{\underset{Ethanol}{H3C - CH2 - OH} ->[conc{.} H+/\Delta] \underset{Ethene}{CH2 = CH2} + H2O}\]
The mechanism for this reaction is:
Step 1: Protonation of ethanol:
Step 1: Formation of carbocation:
Step 3: Formation of ethene and regeneration of proton:
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| (b) |  |
| (c) |  |
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Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
