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Thermodynamics

Question
CBSEENCH11006075

Is the bond enthalpy of all the four C – H bonds in CH4 molecule equal ? If not, then why ? How is the C – H bond energy then reported ?

Solution
No, because after the breaking of C – H bonds one by one the electronic environments change. The reported nature is the average value of the bond dissociation energies of the four C – H bonds.