BE 7996 Thu Apr 23 3:55 PM a E Chrome File Edit View History Bookmarks People Wi

Question

BE 7996 Thu Apr 23 3:55 PM a E Chrome File Edit View History Bookmarks People Window Help UT Arlington Chem 32 YouTube App muTA m Bills m News m Popular m to Quizlet STUDY BLUE Y Yaho rtb P My Assignment Resources 55 PM A 78.5/100 o Assignment Information 4/26/2015 04: 4/23/2015 12:47 AM Gradebook Attempts Score Calcul Print dic Tab Available From: 4/20/2015 04:55 PM of 20 00 4/26/2015 04:55 PM 00 Points Possible: 00 Grade Category: Graded Use the table of bond dissociation energies to calculate and compare the enthalpy of monobromination and 00 monochlorination for the given alkyl position Description: 00 CH Homework SP15 HB kJ m 80 AH You can check your answers CH up on any question 00 You can keep trying to answer each question until kJ m HCE AH you get it right or give up 00 CH You lose 10% of the points available to each 00 answer in your question for each incorrect attempt Bond Dissociation Energies (for A-B A. .B 00 Bond broken kWmol Bond broken NH, kJ/mol Bond broken kJWmol OIHelp with This Topic 00 CHIH 436 H Br 366 KH-CI 432 CH3 CH2CH2-H 423 CH3CH2CH2 -Br 294 CH3CH2CH2 -Cl 354 OIWeb Help & Videos (CH3)2CH-H 413 (CH3)2CH-Br 298 (CH3)2CH-CI 355 00 OITechnical Support and Bug Reports DB-Br 193 CI-CI 243 Previous Give Up Solution 2 Check Answer Next Exit & Vi Hint 20 Copyright 20 2015 Sapling Learning, In cy policy

Explanation / Answer

enthalpy of a reaction = bond dissociation energies of reactants - bond dissociation energies of rpoducts

for mono bromination  

    enthalpy = (400 +193) - (292+366) = -65kJ/mol

for monochlorination

    Enthalpy = (400 +243) -(349+432) = -138 kJ/mol

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