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We can calculate a more general bond energy by finding the average of the bond energies of a specific bond in different molecules to get the average bond energy. Table 1: Average Bond Energies (kJ/mol)
Except for diatomic molecules, the bond energies listed in Table \(\PageIndex{1}\) are average values for all bonds of a given type in a range of molecules. Even so, they are not likely to differ from the actual value of a given bond by more than about 10%.
The bond dissociation energy (enthalpy change) for a bond A 9B which is broken through the reaction AB : A B is defined as the standard-state enthalpy change for the reaction at a specified temperature, here at 298 K.
This page has tables of standard bond energies and bond dissociation energies. Standard Bond Energies. 36. * Average Bond Dissociation Enthalpies in kcal per mole (There can be considerable variability in some of these values.)
The following tables list experimental bond dissociation enthalpies of common bonds at 298 K.
Table of chemical bond energies. Table shows energy of common chemical bonds in selected unit (kJ/mol, atomic units, eV etc.).
*Bond dissociation energies for diatomic molecules can be directly measured. The rest are average bond energies.
Average Bond Energies (kJ/mol) —H Si— Si— Si— Si—l 0— 0— 0— 0— 0— —N —o Bond H N o F H p o s F N N Energy 272 243 418 498 Bond Si Si s F p_Br Energy 226 310 234 213 490 272 1070 Bond s— s— F Cl Energy 218 212 215 Bond Energy 432 427 363 347 305 358 453 339 276 216 614 (799 in C02) Single Bonds H— H— H— c— c—
Toggle navigation. chapters . 1. Fundamentals; 2. Gases; 3. Atomic Theory; 4. Bonding; 5. IMFs; 6. Thermo
Some Multiple Bond Energies (kJ/mol) C == C 602. C == N 615. C == O 799. C ≡ ≡C 835. C ≡ ≡N 887. C ≡ ≡O 1072. N == N 418. N == O 607.