Author: Anonymous

Consider the bond dissociation energies listed below in kcal/mol.CH3-Br                      70CH3CH2-Br             68(CH3)2CH-Br          68(CH3)3C-Br              65These data show that the carbon-bromine bond is weakest when bromine is bound to a ________.

Which of the following cannot be a nucleophile?

If the conversion of A to B is slow and B to C is fast, what is the rate equation for this reaction?  

Which of the following is the most reactive substrate in an E1 reaction? 

The major product(s) of this reaction would be

What is the major elimination product obtained from the following reaction?  

Using the bond dissociation energies given, calculate ΔH° for the following reaction.     Bond A-B ΔH° KJ/mol CH3CH2-Br 285 H-OH 498 CH3CH2-OH 393 H-Br 368  

Predict the two most likely mechanisms which occur when 2-iodohexane is heated in ethanol.

elect the word or phrase that complete each sentence (constitutional isomers, diastereomers, enantiomers, meso compounds, higher, lower, reaction, addition, carbocation, carbanion, nucleophiles, electrophiles, elimination, heterolysis, homolysis, reagent, substitution, strong, weak, charge, concerted, two step, SN1, SN2, racemization, hyperconjugation, alkyl halides, inversion):  (   Good leaving groups are the conjugate bases of  ………………….. acids.  Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Given the bond dissociation energies below (in kcal/mol), estimate the ΔH° for the propagation step CH3CH2CH2—H                     98(CH3)2CH—H                            95Cl—Cl                                           58H—Cl                                            103CH3CH2CH2—Cl                      81(CH3)2CH—Cl                             80