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Use bond dissociation enthalpies to calculate values of delta H° for the following reactions a) CH3-CH3 + I2 = CH3CH2I + HI b) CH3CH2Cl + HI = CH3CH2I + HCl

Use bond dissociation enthalpies to calculate values of delta H° for the following reactions a) CH3-CH3 + I2 = CH3CH2I + HI b) CH3CH2Cl + HI = CH3CH2I + HCl

Chemistry
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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Use bond dissociation enthalpies to calculate values of delta H° for the following reactions a) CH3-CH3 + I2 = CH3CH2I + HI b) CH3CH2Cl + HI = CH3CH2I + HCl
CHAPTER 4 The Study of Chemical Reactions (c) (CH3),CHCH(CH;)CH;CH, H CH, -40 (а) CHCH,CH(СH)2 (b) (CH3),CCH,CH3 CH3 CH3 (f) (d) (e) Use bond-dissociation enthalpies (Table 4-2, p. 167) to calculate values of AH° for the following reactions. (a) CH3-CH; + I2 (b) CH;CH,CI + (c) (CH3);C-OH + HCl (d) CH;CH,CH3 (e) CH;CH,OH + HBr 4-41 CH;CH,I + CH;CH21 + HC) (CH3); C-CI + H,O CH3 CH3 + CH, CH;CH,-Br + H20 HI HI H2 4-42 Use the information in Table 4-2 (p. 167) to rank the following radicals in decreasing order of stability. CH,CH, -CH, (CH,),C (CH,),CH CH,=CH-CH, •CH, For each alkane, 1. draw all the possible monochlorinated derivatives. 2. determine whether free-radical chlorination would be a good way to make any of these monochlorinated deriv (Will the reaction give mostly one major product?) 3. which monobrominated derivatives could you form in good yield by free-radical bromination? (a) cyclopentane (c) 2-methylpentane Write a mechanism for the light-initiated reaction of cyclohexane with chlorine to give chlorocyclohexane. Label initiation and propagation steps. 4-43 (b) methyleyclopentane (d) 2,2,3,3-tetramethylbutane 4-44 hv HCI Cl, cyclohexane chlorocyclohexane 4-45 Draw the important resonance forms of the following free radicals. -CH, (c) CH-C-O• (b) (а) CН,—СH-CH, (f) (e) (d) *4-46 In the presence of a small amount of bromine, the following light-promoted reaction has been observed CH3 HạC CH3 H3C H3C. CH3 + hv Br HBr Br2 H Br uld oxnlain bow hoth produ
Transcribed Image Text:CHAPTER 4 The Study of Chemical Reactions (c) (CH3),CHCH(CH;)CH;CH, H CH, -40 (а) CHCH,CH(СH)2 (b) (CH3),CCH,CH3 CH3 CH3 (f) (d) (e) Use bond-dissociation enthalpies (Table 4-2, p. 167) to calculate values of AH° for the following reactions. (a) CH3-CH; + I2 (b) CH;CH,CI + (c) (CH3);C-OH + HCl (d) CH;CH,CH3 (e) CH;CH,OH + HBr 4-41 CH;CH,I + CH;CH21 + HC) (CH3); C-CI + H,O CH3 CH3 + CH, CH;CH,-Br + H20 HI HI H2 4-42 Use the information in Table 4-2 (p. 167) to rank the following radicals in decreasing order of stability. CH,CH, -CH, (CH,),C (CH,),CH CH,=CH-CH, •CH, For each alkane, 1. draw all the possible monochlorinated derivatives. 2. determine whether free-radical chlorination would be a good way to make any of these monochlorinated deriv (Will the reaction give mostly one major product?) 3. which monobrominated derivatives could you form in good yield by free-radical bromination? (a) cyclopentane (c) 2-methylpentane Write a mechanism for the light-initiated reaction of cyclohexane with chlorine to give chlorocyclohexane. Label initiation and propagation steps. 4-43 (b) methyleyclopentane (d) 2,2,3,3-tetramethylbutane 4-44 hv HCI Cl, cyclohexane chlorocyclohexane 4-45 Draw the important resonance forms of the following free radicals. -CH, (c) CH-C-O• (b) (а) CН,—СH-CH, (f) (e) (d) *4-46 In the presence of a small amount of bromine, the following light-promoted reaction has been observed CH3 HạC CH3 H3C H3C. CH3 + hv Br HBr Br2 H Br uld oxnlain bow hoth produ
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