Question

Conversion of Ethyne to Ethene
How to convert Ethyne to Ethene?

Answer 1

Catalytic hydrogenation of ethyne in the presence of hydrogen gas forms ethene. Lindlar's catalyst is used.
Lindlar's catalyst is a palladium catalyst poisoned with traces of lead and quinoline.

Answer 2

Conversion of Ethyne to Ethene

• In the given case, the reactant ethyne is alkynes whereas the required product is ethene which is alkenes.
• To convert the alkynes to an alkene, the alkyne must be treated with the calculated amount of dihydrogen in the presence of Lindlar's catalyst.
• Lindlar's catalyst refers to Partially deactivated palladised charcoal with toxic substance such as sulfur.
• The chemical equation involved in the conversion of ethyne to ethene is as follows:

$C H \equiv C H+H_{2} \stackrel{P d / C}{\longrightarrow} C H_{2}=C H_{2}$

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