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Dehydration Reaction

The gas forme...

Question

The gas formed when ethanol is treated with hot concentrated sulphuric acid is _____.

A

Ethene

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B

Ethane

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C

Methene

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D

Methane

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Solution

The correct option is A Ethene
Heating ethanol with hot concentrated sulphuric acid, results in the dehydration (removal of water) of ethanol to give ethene. Ethene is the gas evolved during this reaction as the other product is water which dilutes the sulphuric acid solution.

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