Using bond enthalpies, estimate the standard heat of the reaction for the drobromination of ethylene: Br H CH,=CH, + HBr ČH,-CH, TABLE 4-5. EMPIRICAL BOND ENTHALPIES AT 25°C (kcal/mole) Bond AH Bond ΔΗ C-CI H-H H-F 104 79 C-Br C-S 135 66 H-CI H-Br 0-0 0=0 0-H 103 62 C=8 C-N C=N 88 114 70 147 210 38 33 118 C=N N-N 111 C-H 99 C-0 N=N 100 84 170 C=0 C-C C=C C=C C-F N=N 226 N-H F-F 83 93 37 58 147 194 105 C-CI Br-Br C(s, graphite) - C(g) 172 46

Using bond enthalpies, estimate the standard heat of the reaction for the drobromination of ethylene: Br H CH,=CH, + HBr ČH,-CH, TABLE 4-5. EMPIRICAL BOND ENTHALPIES AT 25°C (kcal/mole) Bond AH Bond ΔΗ C-CI H-H H-F 104 79 C-Br C-S 135 66 H-CI H-Br 0-0 0=0 0-H 103 62 C=8 C-N C=N 88 114 70 147 210 38 33 118 C=N N-N 111 C-H 99 C-0 N=N 100 84 170 C=0 C-C C=C C=C C-F N=N 226 N-H F-F 83 93 37 58 147 194 105 C-CI Br-Br C(s, graphite) - C(g) 172 46

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions

Section5.8: Product- Or Reactant-favored Reactions And Thermodynamics

Problem 1.2ACP

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