Use the bond enthalpies in the table below to determine the enthalpy of reaction

Question

Use the bond enthalpies in the table below to determine the enthalpy of reaction in the following questions: Average Bond-Enthalpies- (kJ/mol) Single Bonds -H 41 3 348 293 358 485 N- 391 -H 463 -O 146 F-F 155 N-N 163 N-O 201 272 N-CI 200 N-Br 243 CI-P 253 N-I CI-CI 242 O-CI 203 -I 234 C-C Br-p 237 B-CI 218 Br-Br 193 339 327 S-Cl 253 S-Br 218 S-H 240 259 -X-H 436 567 431 366 299 208 175 181 H-Ci H-Br Si--H 323 Si-Si 226 Si-c 301 368 s-s 266 -Br Multiplo Bonds 95 N-N 18 N N 94 O2 614 830 615 523 418 C-N 799 1072 CHO (2 points) 9. Cl Cl (2 points) Cl 10

Explanation / Answer

Answer 9 ;

Delta H = 2*431-(436+242) = 184 kJ/mol. ( delta H= Enthalpy of product - enthalpy of reactants)

Answer 10;

Delta H = (328+328+1072+431) -( 328+328+328+413)

= 762 kJ

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