Question:
The maximum heat of hydrogenation among the following is
The maximum heat of hydrogenation among the following is
Show Hint
Heat of hydrogenation decreases with increasing alkene stability: terminal < di-substituted < tri-substituted < tetra-substituted.
Updated On: Apr 16, 2026
- a
- b
- c
- d
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Heat of hydrogenation is inversely related to the stability of the alkene. More stable alkenes have lower heats of hydrogenation.
Step 2: Detailed Explanation:
The stability of alkenes increases with greater substitution. A more substituted alkene (more alkyl groups attached to the double bond) is more stable. Therefore, the least substituted alkene will have the highest heat of hydrogenation. Without the images, if the options include an alkene like 1-butene (terminal) and 2-butene (internal), the terminal alkene is less stable and has a higher heat of hydrogenation.
Step 3: Final Answer:
The least substituted alkene (likely a terminal alkene) has the maximum heat of hydrogenation, which corresponds to option (B) based on typical patterns.
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