Question:
When ethene is treated with \(H_{2}\) in the presence of a catalyst, ethane is formed. This reaction is an example of.
When ethene is treated with \(H_{2}\) in the presence of a catalyst, ethane is formed. This reaction is an example of.
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Sabatier-Senderens reaction uses Ni, Pt, or Pd as catalysts for hydrogenation.
Updated On: Apr 27, 2026
- substitution reaction
- elimination reaction
- oxidation reaction
- addition reaction
- rearrangement reaction
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Unsaturated hydrocarbons (alkenes/alkynes) react with hydrogen to form saturated hydrocarbons (alkanes).
Step 2: Meaning
This process involves the breaking of a pi-bond and the addition of two atoms across the double bond.
Step 3: Analysis
$CH_2=CH_2 + H_2 \rightarrow CH_3-CH_3$. No atoms are replaced; they are only added.
Step 4: Conclusion
This is a classic example of a catalytic addition reaction.
Final Answer: (D)
Unsaturated hydrocarbons (alkenes/alkynes) react with hydrogen to form saturated hydrocarbons (alkanes).
Step 2: Meaning
This process involves the breaking of a pi-bond and the addition of two atoms across the double bond.
Step 3: Analysis
$CH_2=CH_2 + H_2 \rightarrow CH_3-CH_3$. No atoms are replaced; they are only added.
Step 4: Conclusion
This is a classic example of a catalytic addition reaction.
Final Answer: (D)
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