We have to calculate the enthalpy of reaction (ΔH) using the given bond enthalpies.
The change of enthalpy for a chemical reaction (ΔH) can be calculated using bond energies:
To determine the enthalpy of reaction, we need to first see what bonds are present in the reactants and the products.
Use bond enthalpies in the table below to estimate ΔH for each of the following reactions.
|Average Bond Enthalpies (kJ/mol)|
|C-H 413||N-H 391||O-H 463||F-F 155|
|C-C 348||N-N 163||O-O 146|
|C=C 614||N-O 201||O=O 495||Cl-F 253|
|C-N 293||N-F 272||O-F 190||Cl-Cl 242|
|C-O 358||N-Cl 200||O-Cl 203||Br-F 237|
|C=O 799||N-Br 243||O-I 234||Br-Cl 218|
|C-F 485||H-H 436||Br-Br 193|
|C-Cl 328||H-F 567|
|C-Br 276||H-Cl 431||I-Cl 208|
|C-I 240||H-Br 366||I-Br 175|
|H-I 299||I-I 151|
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