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Using the bond dissociation enthalpies (BDE) in the table, estimate ∆Hº for the disproportionation oThermochemistry Chemistry Question

Question

Using the bond dissociation enthalpies (BDE) in the table, estimate ∆Hº for the disproportionation of hydrazine described in the equation below.
3 N2H4(g)  4 NH3(g) + N2(g)

A.

+283 kJ•mol‒1

B.

–283 kJ•mol‒1

C.

–393 kJ•mol‒1

D.

–455 kJ•mol‒1

✓ Correct
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