alleryStart learning →Why is a mean C-H bond enthalpy used for methane?
AEach C-H break needs different energy
BAll four bonds differ in length
CMethane has some double bonds
DC-H bonds never break stepwise
Answer & Solution
Correct answer: A. Each C-H break needs different energy
Breaking the C-H bonds one after another costs 427, 439, 452 and 347 kJ/mol, so an average is quoted.
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