What Is the Correct Order of Exothermicity for Hydrogenation of the Following

question 8

Multiple Choice

What is the correct order of exothermicity for hydrogenation of the following hexadienes upon treatment with H₂/Pd (more exothermic > less exothermic) ?

• A) 1 > 2 > 3
• B) 3 > 1 > 2
• C) 2 > 1 > 3
• D) 3 > 2 > 1

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Definitions:

Barbiturate

A class of sedative and sleep-inducing drugs derived from barbituric acid, historically used for anxiety, insomnia, and seizure disorders.

Barbiturates

Depressant drugs, such as Nembutal and Seconal, that decrease central nervous system activity.

Depressant Drugs

A class of substances that reduce the activity of the central nervous system, leading to sedation, relaxation, and decreased inhibition.

Central-Nervous-System Activity

Refers to the functions and processes carried out by the brain and spinal cord.