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Problem: Calculate the heat of atomization (the heat required to convert a molecule in the gas phase into its constituent atoms in the gas phase) of C2H3Cl, using the average bond energies in the following table:BondBond energy (kJ/mol)C-C347C=C611C≡C837H-C414C-Cl339H-Cl431

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The heat of atomization (ΔHat) is the energy needed to break all the bonds present in the molecule. It is the sum of the bond energies (E) present in the molecule.

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Problem Details

Calculate the heat of atomization (the heat required to convert a molecule in the gas phase into its constituent atoms in the gas phase) of C2H3Cl, using the average bond energies in the following table:


BondBond energy (kJ/mol)
C-C347
C=C611
C≡C837
H-C414
C-Cl339
H-Cl431



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Based on our data, we think this problem is relevant for Professor Tsen's class at UWATERLOO.