Using Table 8.3, estimate AH for each of the following gas-phase reactions (note that lone pairs on atoms are not shown): F-F 155 C1-F Cl-CI 253 242 328 243 276 Br-F Br-ci Br-Br 218 I 567 253 TABLE 8.3 Average Bond Enthalpies (kJ/mol)

+ H-0-0-H Η Η H-0-C-C-0-H Η Η Τ (b) Η – ” CEC H + H-CENT} των H-C-C-C=N

Exercises 333 (c) 201-N- C ot N =N + 3C1-C1 w ese 8.70 Using Table 8.3. estimate AH for the falla

8.69 Using Table 8.3, estimate AH for each of the following gas-phase reactions (note that lone pairs on atoms are not shown):

8.69 Using Table 8.3, estimate AH for each of the following gas-phase reactions (note that lone pairs on atoms are not shown):

F-F 155 C1-F Cl-CI 253 242 328 243 276 Br-F Br-ci Br-Br 218 I 567 253 TABLE 8.3 Average Bond Enthalpies (kJ/mol) Single Bonds C-H 413 N -H 391 0-H 463 C-C 348 N -N 163 0-0 146 C-N 293 N-O 2010 – F 190 C- 0 358N -F 2720 – 203 C-F 485 N-CI 200 0-1 234 C-C1 N-Br C-Br S-H 339 c-1 240 н-н .SE c-s 259 H-F S-a H-CI S-BI 218 Si-H 323 H-Br 366 SS 266 Si-Si 226 H-1 299 Si-C 301 Si-O 368 Si– 464 Multiple Bonds C=C 614 N= N 4 18 0=0 495 C-C 839 NN 941 C-N 615N -0 607 S=0 523 CEN 891 SES 418 c=o 799 c=0 1072 I-CI l-Br 1-1 208 175 151 ISBN 1-323-74922-5