11th Class Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank 11th CBSE Chemistry Hydrocarbons

  • question_answer
    Why do the C?C bonds rather than C?H bonds break during cracking of alkanes?

    Answer:

                    Since the bond dissociation energy of C?C bonds \[(348\,kJ\,mo{{l}^{-1}}),\] is lower than bond dissociation energy of C?H bonds \[(414\,kJ\,mo{{l}^{-1}}),\] therefore, during cracking of alkanes, C?C bonds break more easily than C?H bonds.


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