NEET Chemistry Enthalpy MCQ Question
In the diagram shown above, the process of dissociation of CH4(g) into C(g) and H(g) is illustrated. Which of the following is the mean bond enthalpy for C–H bonds in methane?
416 kJ/mol
1665 kJ/mol
347 kJ/mol
427 kJ/mol
Correct Answer
Detailed Explanation
The mean bond enthalpy for C–H bonds in methane is calculated as the average of the enthalpy change for breaking all four C–H bonds, which is 416 kJ/mol as mentioned in the NCERT context.
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