Question

Name the gas evolved when ethene undergoes hydrogenation reaction

Answer 1

Answer:Ethane

Explanation:

C2H4 +H2  ---Ni---300C--> C2H6

Hydrogenation- addition of hydrogen

Answer 2

Dear student,

● Answer -
Ethane (C2H6) gas is evolved on hydrogenation (C2H4) of ethene.

● Explanation -
Hydrogenation is the reaction in which hydrogen atoms get added to the compound.


Alkenes on hydrogenation with Ni/H2 gives alkanes.
R-CH=CH-R' + H2 --> R-CH2-CH2-R'

Ethene on hydrogenation by Ni/H2 releases ethane gas.
CH2=CH2 + H2 --> CH3-CH3

Here, 2 H-atoms get added to the double bond.

Hope this helps you clear the query.
Thanks for asking..