The heat of hydrogenation of cyclohexene is:
Correct answer: B. -208 kJ/mol
- A. -239 kJ/mol
- B. -208 kJ/mol
- C. -19.5 kJ/mol
- D. Kcal/mol
Explanation
Hydrogenation of cyclohexene involves breaking a pi bond and forming two new sigma bonds. This releases energy, making the reaction exothermic.The typical range for the heat of hydrogenation of alkenes like cyclohexene falls between -110 kJ/mol to -130 kJ/mol.-120 kJ/mol falls within this expected range
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Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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