Use Table 8.4 to estimate the enthalpy change for each of the following reactions:
a. H2C == O (g) + HCl (g) †’ H3C - O - Cl (g)
b. H2O2 (g) + 2CO (g) †’ H2 (g) + CO2 (g)
(c). 3H2C == CH2 (g) †’ C6H12 (g) (the six carbon atoms form a six-member ring with two H atoms on each C atom)

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TABLE 8.4 Single Bonds e Average Bond Enthalpies (kJ/mol) C H C-C C-N с_o C-F C CI C Br 413 348 293 358 485 328 276 240 259 N H N-N 391 163 201 272 200 243 463 146 190 203 234 F-F 155 O-O CI-F CI-CI 253 242 O Cl N F N-CI N Br 237 218 193 S--H BrCl 436 SF 567 431 366 299 339 327 253 218 266 S-CI SBr CS H-Cl H Br I- Cl I Br 208 175 151 Si-H SiSi SiC Si-O SiCl 323 226 301 368 464