Which of the following reactions is an example of hydrogenation? (2023)

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Question: Which of the following reactions is an example of hydrogenation? (2023)

Options:

Correct Answer: Addition of H2 to ethene

Exam Year: 2023

Solution:

Hydrogenation refers to the addition of hydrogen (H2) to unsaturated hydrocarbons, such as the addition to ethene to form ethane.

Which of the following reactions is an example of hydrogenation? (2023)

Which of the following reactions is an example of hydrogenation? (2023)

Step 1: Understand what hydrogenation means. It is a chemical reaction where hydrogen (H2) is added to a compound.
Step 2: Identify the type of compounds involved. Hydrogenation typically occurs with unsaturated hydrocarbons, which have double or triple bonds.
Step 3: Look for an example of hydrogenation. A common example is the reaction of ethene (C2H4), which has a double bond, reacting with hydrogen to form ethane (C2H6), which has only single bonds.
Step 4: Confirm that the reaction involves adding hydrogen to the unsaturated compound, resulting in a saturated compound.

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