JEE Main Chemistry question
The standard enthalpy of formation () at 298 K for methane, , is (as printed in the source; the accepted value is about ). The additional information required to determine the average energy for C-H bond formation would be **[AIEEE 2006]**
Answer: (A)
Solution
To build a Born-Haber-type cycle linking to the C-H bond energy, one must convert solid graphite into gaseous carbon atoms (enthalpy of
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