Find the amount (in moles) of C—C bonds that must be broken when 1.0 mole of C(g) is formed from C(diamond). Calculate the ΔH of sublimation of diamond from the data in Appendix II, Table B. Then do the calculation using the C—C bond energy in Table 10.3. Suggest a reason for the difference between the two values.

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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 CIO 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 0-0 0-0 O-F O-CI 0-1 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