Question

What is the action of cold conc. sulphuric acid on ethene ?​

Answer 1

Answer:

The reaction with ethene

Alkenes react with concentrated sulphuric acid in the cold to produce alkyl hydrogensulphates. Ethene reacts to give ethyl hydrogensulphate

Answer 2

Action of given reagent is formation of ethyl hydrogensulphate.

•CH2=CH2 + cold conc. H2SO4 -> CH3CH2HSO4

•This reaction occuring is addition reaction.

•Alkenes are a type of hydrocarbons.

•Three types of hydrocarbons are - alkane, alkene and alkyne.

•Alkene is more reactive than alkane and less reactive than alkyne.

•Alkenes are also known as olefins.

•They are unstaturated in nature, with double bond present in the compound.

•Chemical formula of ethene is CH2=CH2.

•Sulphuric acid is an oxidizing agent, as it can only get reduced.