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← ScienceWhich outcome diminishes reactivity when alkenes undergo hydrogenation?
A)Pi bond saturation occurs✓
B)Carbocation rearrangement forms
C)Branched isomers equilibrate
D)Elimination reaction accelerates
💡 Explanation
When alkenes undergo hydrogenation the *pi bond saturation* mechanism reduces the electron density because the pi bond reacts with hydrogen, therefore removing it is stabilized by the sigma bond. It favors saturation, rather than elimination.
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