Bond
C-H
C-C
C=C
C=O
Enthalpy
(kJ/mol)
413
348
614
799
Total AH:
Bond
O-H
0=0
O-S
O=S
Enthalpy
(kJ/mol)
463
495
265
523
Bond
H-H
N-H
NEN
S-S
On your own: Using the chart above, predict the enthalpy change for the following reactions. Show your
work. A key of all relevant molecule structures is shown on the right.
A. N₂ + 3H₂2NH₂
I
N₂: NEN
H₂: H-H
NH: HẠNH
H
Enthalpy
(kJ/mol)
436
391
941
266
Exothermic or endothermic: