Question

The below reaction is an example of: \[ \text{CH}_3\text{C} \equiv \text{C}\text{CH}_3 \xrightarrow{\text{Ni catalyst, H}_2} \text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3 \quad (\text{n-Butane}) \]

• A. Hydrogenation
• B. Halogenation
• C. Hydrolysis
• D. Addition

Hint:

An addition reaction involves adding atoms or groups to a molecule, typically across a double or triple bond.

Answer 1

The Correct Option is D

1. Addition reaction:
The given reaction is an example of an addition reaction. In this reaction, a molecule of hydrogen (\( H_2 \)) is added to the alkyne (2-butyne) in the presence of a nickel (Ni) catalyst. This leads to the conversion of the alkyne (an unsaturated compound) into an alkane (a saturated compound), n-butane. This is an addition of hydrogen to the carbon-carbon triple bond. 2. Other reactions:
Hydrogenation is a specific type of addition reaction where hydrogen is added to unsaturated compounds, but in this case, the broader term "addition" is more appropriate.
Halogenation involves the addition of halogens, which is not happening here.
Hydrolysis is a reaction with water to break down compounds, not applicable in this case.