Ethanol ( $C H_{3} C H_{2} OH$ ) when heated with excess of conc. $H_{2} S O_{4}$ forms

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Ethane

Ethene

Ethyne

Ethanol

answer is B.

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Detailed Solution

Ethanol (

C H_{3} C H_{2} OH

) when heated with excess of conc.

H_{2} S O_{4}

forms ethene.
Ethene and water are the products formed as a result of heating of ethanol with excess concentrated sulphuric acid (

H_{2} S O_{4}

) at a temperature of 170°C. The concentrated acid is recovered unaltered and merely serves as a dehydrating agent. The reaction can be represented as:

C H_{3} C H_{2} OH + conc . H_{2} S O_{4} + heat \to C H_{2} = C H_{2} + H_{2} O

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