Using bondenergies, estimate the enthalpy change, in kJ, for the followinggas-phase reaction.

CH₄(g)+ 2O₂(g) ? CO₂(g) +2H₂O(g)

Bond Energies (inkJ/mol)

H-H

C-H

C-O

O-H

C-C

N-H

C-N

N-N

N-O

O-O

O-F

H-F

432

411

358

459

346

386

305

167

201

142

190.

565

C=C

C?C

C=O in CO₂

C?O

N=N

N?N

O=O

602

835

799

1.072 x 10⁰³

418

942

494

-1.51 x 10⁰³kJ

-588 kJ

116 kJ

-802 kJ

-353 kJ

Question

Using bondenergies, estimate the enthalpy change, in kJ, for the followinggas-phase reaction.

CH₄(g)+ 2O₂(g) ? CO₂(g) +2H₂O(g)

Bond Energies (inkJ/mol)

H-H	C-H	C-O	O-H	C-C	N-H	C-N	N-N	N-O	O-O	O-F	H-F
432	411	358	459	346	386	305	167	201	142	190.	565

C=C	C?C	C=O in CO₂	C?O	N=N	N?N	O=O
602	835	799	1.072 x 10⁰³	418	942	494

-1.51 x 10⁰³kJ

-588 kJ

116 kJ

-802 kJ

-353 kJ

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