What is the TOTAL bond energy of the products in the chemical reaction of the combustion of methane (CH4) below? **HINT: To find the TOTAL bond energy you add up all of the bond energies
of the products together**
Bond
Energy
(kJ/mol)
H-H
432
Осн.
H-O
467
methane
Oco
carbon dioxide
2 C=0
bonds
2H,0
water
2 H-O
bonds
oxygen
1 0=0
bonds
413
C-H
4 C-H
bonds
C=0
799
Total Bond Energy = Bond Energy x # of bonds of molecules
0-0
146
00
495
1598 +934 = 2532 kJ/mole
1598 +1868 = 3466 kJ/mole
799 + 1868 = 2667
kJ/mole
799 + 934 = 1733 kJ/mole