# Problem: Using bond enthalpies in the table, estimate H for the following gas-phase reactions.Average Bond Enthalpies (kJ/mol)Single BondsC-H413N-H391O-H463C-C348N-N163O-O146C-N293N-O201O-F190C-O358N-F272O-Cl203C-F485N-Cl200O-I234C-Cl328N-Br243C-Br276S - H339C-I240H - H436S - F327C - S259H - F567S - Cl253H - Cl431S - Br218Cl - Cl242H - Br366S - S266Br - Br193H - I299Multiple BondsC=C614N=N418O=O495CC839N N941C=N615N=O607C N891C=O799CO1072Estimate H for the reaction.

###### FREE Expert Solution

To calculate the ΔH°rxn using bond energies, we’re going to use the following equation:

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###### Problem Details

Using bond enthalpies in the table, estimate H for the following gas-phase reactions.

 Average Bond Enthalpies (kJ/mol) Single Bonds C-H 413 N-H 391 O-H 463 C-C 348 N-N 163 O-O 146 C-N 293 N-O 201 O-F 190 C-O 358 N-F 272 O-Cl 203 C-F 485 N-Cl 200 O-I 234 C-Cl 328 N-Br 243 C-Br 276 S - H 339 C-I 240 H - H 436 S - F 327 C - S 259 H - F 567 S - Cl 253 H - Cl 431 S - Br 218 Cl - Cl 242 H - Br 366 S - S 266 Br - Br 193 H - I 299 Multiple Bonds C=C 614 N=N 418 O=O 495 CC 839 N N 941 C=N 615 N=O 607 C N 891 C=O 799 CO 1072

Estimate H for the reaction.