Using the table of average bond dissociation enthalpies at
Chapter 6, Problem 6.14(choose chapter or problem)
Using the table of average bond dissociation enthalpies at 25C, determine which of the following reactions are energetically favorable at room temperature. Assume that DS 5 0. Bond Bond Dissociation Enthalpy kJ (kcal)/mol Bond Bond Dissociation Enthalpy kJ (kcal)/mol H9H 435 (104) C " I 238 (57) O9H 439 (105) C " Si 301 (72) C9H(9CH3) 422 (101) C " C 727 (174) C9H(" CH2) 464 (111) C " O (aldehyde) 728 (174) C9H(# CH) 556 (133) C " O (CO2) 803 (192) N9H 391 (93) C # O 1075 (257) Si9H 318 (76) N # N 950 (227) C9C 376 (90) C # C 966 (231) C9N 355 (85) O " O 498 (119) (a) CH2" CH2 1 2H2 1 N2 h H2NCH2CH2NH2 (b) CH2" CH2 1 CH4h CH3CH2CH3 (c) CH2" CH2 1 (CH3)3SiH h CH3CH2Si(CH3)3 (d) CH2" CH2 1 CHI3h CH3CH2CI3 1 CH2"CH2 (f) 1 CO2 (g) O O (h) HC#CH 1 O2 HC9CH O O (e) O ' CH2" CH2 1 CO 1 H2 CH3CH2CH (i) 2CH4 1 O2h 2CH3OH
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