CH-1227
Bond energies
Chemistry · Secondary 4 · Hard · Bond energies
Ethyne, , reacts with hydrogen to form ethane, :
.
Use the average bond energies below to find the enthalpy change of the reaction.
C≡C: 839 kJ/mol, C–C: 347 kJ/mol, C–H: 413 kJ/mol, H–H: 432 kJ/mol.
.
Use the average bond energies below to find the enthalpy change of the reaction.
C≡C: 839 kJ/mol, C–C: 347 kJ/mol, C–H: 413 kJ/mol, H–H: 432 kJ/mol.
- −296 kJ/mol
- −120 kJ/mol
- +120 kJ/mol
- +312 kJ/mol
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