What is the main product when 2-butyne is treated with excess H2 in the presence

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Question: What is the main product when 2-butyne is treated with excess H2 in the presence of a catalyst?

Options:

Correct Answer: Butane

Solution:

The main product is butane, as 2-butyne is fully hydrogenated to form butane.

What is the main product when 2-butyne is treated with excess H2 in the presence of a catalyst?

What is the main product when 2-butyne is treated with excess H2 in the presence of a catalyst?

Step 1: Identify the starting compound, which is 2-butyne. It is a type of alkyne with a triple bond between two carbon atoms.
Step 2: Understand that hydrogenation is a chemical reaction where hydrogen (H2) is added to a compound.
Step 3: Recognize that a catalyst is used to speed up the hydrogenation process. Common catalysts include palladium, platinum, or nickel.
Step 4: Since excess H2 is used, it means there is more than enough hydrogen to react with the 2-butyne.
Step 5: The triple bond in 2-butyne will first convert to a double bond, and then to a single bond as hydrogen is added.
Step 6: After the reaction is complete, the final product will be butane, which is an alkane with no double or triple bonds.

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