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Given the Bond Dissociation Energies Below (In Kcal/mol), Estimate the ΔH°

Question 51

Multiple Choice

Given the bond dissociation energies below (in kcal/mol) , estimate the ΔH° for the propagation step Given the bond dissociation energies below (in kcal/mol) , estimate the ΔH° for the propagation step CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>-H 98 (CH<sub>3</sub>) <sub>2</sub>CH-H 95 Cl-Cl 58 H-Cl 103 CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>-Cl 81 (CH<sub>3</sub>) <sub>2</sub>CH-Cl 80 A) -22 kcal/mol B) +22 kcal/mol C) -40 kcal/mol D) +45 kcal/mol

CH3CH2CH2-H 98
(CH3) 2CH-H 95
Cl-Cl 58
H-Cl 103
CH3CH2CH2-Cl 81
(CH3) 2CH-Cl 80


A) -22 kcal/mol
B) +22 kcal/mol
C) -40 kcal/mol
D) +45 kcal/mol

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