Question

what happens when ethylene reacts with conc. sulphuric acid

Answer 1

Explanation:

• Ethene and sulfuric acid undergo an electrophilic addition reaction.
• Alkyl hydrogensulphates are formed when alkenes react with strong sulfuric acid in the cold.
• When ethene interacts with hydrogensulphate, for example, ethyl hydrogensulphate is produced.
• Ethene is converted to ethyl hydrogensulfate by passing it through concentrated sulphuric acid, which is then diluted with water to generate ethanol.

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Answer 2

Electrophilic Addition Reaction takes place,  when ethylene reacts with conc. sulphuric acid.

Chemical Reaction:

$H_{2}$C=C$H_{2}$     +     $H_{2}$S$O_{4}$               ⇒    $CH_{3}$⁻$H_{2}$S$O_{4}$  [at room temperature]

Ethylene            Sulphuric Acid

• Alkenes react with concentrated sulfuric acid to form alkyl hydrogensulphates.