Given:

n2 + 3h2 → 2nh3

bond bond energy (kj/mol)

n≡n 942

h–h 432

n–h 386

use the bond energies to calculate the change in enthalpy for the reaction.

the enthalpy change for the reaction is kilojoules. express answer in 2 sig figs

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.