(a) The nitrogen atoms in an N2 molecule are held together
by a triple bond; use enthalpies of formation in Appendix
C to estimate the enthalpy of this bond, D(N‚N).
(b) Consider the reaction between hydrazine and hydrogen to
produce ammonia, N2H41g2 + H21g2¡2 NH31g2. Use enthalpies
of formation and bond enthalpies to estimate the enthalpy
of the nitrogen– nitrogen bond in N2H4.
(c) Based on
your answers to parts (a) and (b), would you predict that the
nitrogen–nitrogen bond in hydrazine is weaker than, similar
to, or stronger than the bond in N2 ?
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