Alkane halogenation is a two-step reaction, as shown in the image. Using the table of bond dissociation energies, calcul enthalpy of each step and the enthalpy of the overall reaction. Bond Dissociation Energies (for A-B A•+ • B) Bond broken AH(kJ/mol) Bond brokenAH(kJ/mol) Bond broken AH(kJ/mol) H-H 436 (CH), С -Н (CH,);C-Br 400 Н-Br 366 292 Br-Br 193 Step 1 ΔΗΞ CH3 CH3 -65 H3C- H- H3C- + HBr CH3 CH3 Step 2 AH = CH3 CH3 H3C- + Br2 H3C Br -Br: CH3 CH3 Overall reaction AH = CH3 CH3 H3C H +Br2 H,C- -Br +HBr CH3 CH3 +

Alkane halogenation is a two-step reaction, as shown in the image. Using the table of bond dissociation energies, calcul enthalpy of each step and the enthalpy of the overall reaction. Bond Dissociation Energies (for A-B A•+ • B) Bond broken AH(kJ/mol) Bond brokenAH(kJ/mol) Bond broken AH(kJ/mol) H-H 436 (CH), С -Н (CH,);C-Br 400 Н-Br 366 292 Br-Br 193 Step 1 ΔΗΞ CH3 CH3 -65 H3C- H- H3C- + HBr CH3 CH3 Step 2 AH = CH3 CH3 H3C- + Br2 H3C Br -Br: CH3 CH3 Overall reaction AH = CH3 CH3 H3C H +Br2 H,C- -Br +HBr CH3 CH3 +

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Alkane halogenation is a two-step reaction, as shown in the image. Using the table of bond dissociation energies, calculate the enthalpy of cach step and the enthalpy of the overall reaction. Bond Dissociation Energies (for A-B A• ++B) Bond broken AH(kJ/mol) Bond broken AH(kJ/mol) Bond broken A H (kJ/mol) CH, CH, CH, -H CH, CH, CH, -Br H-H 436 423 H-Br 366 294 Br-Br 193 Step 1 CH;CH,CH2-H + CH,CH,CH2 + HBr AH = kJ/mol Step 2 AH = kJ/mol CH,CH,CH2 + Br2 CH,CH,CH-Br + Br: Overall reaction CH,CH,CH,-H + Br2 CH,CH,CH,-Br + HBr AH = kJ/mol.
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Part A Use bond enthalpies in the table below to estimate AH for each of the following reactions, Average bond enthalpy (kJ/mol) Br Br C-H: 413 N-H: 391 0-H: 463 F-F: 155 Br-C-H + Cl- Cl → Br-C-CI + Cl–H C-C: 348 N-N: 163 0-0: 146 Br Br C=C: 614 N-O: 201 0=O: 495 Cl-F: 253 C-N: 293 N-F: 272 0-F: 190 Cl-Cl: 242 Express your answer in kilojoules to three significant figures. C-0: 358 N-Cl: 200 0-Cl: 203 Br-F: 237 234 Br-Cl: 218 C=0: 799 N-Br: 243 0-I: C-F: 485 H-H: 436 Br-Br: 193 να Αφ C-Cl: 328 H-F: 567 AH = kJ C-Br: 276 H-Cl: 431 I-Cl: 208 C-I: 240 H-Br: 366 I-Br: 175 Submit Request Answer H-I: 299 I-I: 151
* Question Completion Status: QUESTION 39 YOU MUST SUBMIT WORK FOR THIS PROBLEM INTO A SEPARATE ASSIGNMENT. Using the bond energies provided, calculate AHrxn° for: H. H H H Br-Br Br—с-с-Br H H. H Bond Bond energy (in kJ/mole) C-H 410 C-C 350 C-Br 270 C=C 611 Br-Br 194 AHrxn° of the following reaction is kJ. (Remember about correct sign) OUECTION 10
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