?(a) Compare the bond enthalpies (Table 8.3) of the carbon– carbon single, double, and

Chapter 9, Problem 9.12

(choose chapter or problem)

(a) Compare the bond enthalpies (Table 8.3) of the carbon– carbon single, double, and triple bonds to deduce an average \(\pi\)-bond contribution to the enthalpy. What fraction of a single bond does this quantity represent?

(b) Make a similar comparison of nitrogen–nitrogen bonds. What do you observe?

(c) Write Lewis structures of N2H4, N2H2, and N2, and determine the hybridization around nitrogen in each case.

(d) Propose a reason for the large difference in your observations of parts (a) and (b).

Text Transcription:

pi

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