Calculate the heat of atomization of C₂H₃Cl, using the average bond energies in Table 10.3.

Data from Review Question 111

The heat of atomization is the heat required to convert a molecule in the gas phase into its constituent atoms in the gas phase.

The heat of atomization is used to calculate average bond energies.

Without using any tabulated bond energies, calculate the average C—Cl bond energy from the following data: the heat of atomization of CH₄ is 1660 kJ/mol, and the heat of atomization of CH₂Cl₂ is 1495 kJ/mol.

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TABLE 10.3 Average Bond Energies Bond Energy (kJ/mol) 436 414 Bond H-H H-C H-N H-O H-S H-F H-CI H-Br H-I C-C C = C C=C C-N C=N C=N C-O C=O C=O C-CI *799 in CO₂ 389 464 368 565 431 364 297 347 611 837 305 615 891 360 736* 1072 339 Bond N-N N=N N=N N-O N=O N-F N-CI N-Br N-I O-O =O -F -CI O-I F-F CI-F CI-CI Bond Energy (kJ/mol) 163 418 946 222 590 272 200 243 159 142 498 190 203 234 159 253 243 Bond Br-F Br-Cl Br-Br I-CI 1-Br 1-1 Si-H Si-Si Si-C S-O Si=O S=O Si-Cl S=S S-F S-CI S-Br S-S Bond Energy (kJ/mol) 237 218 193 208 175 151 323 226 301 265 368 523 464 418 327 253 218 266