Bonus question What is the major product of the following reaction?

Considering the SN1, SN2, E1, and E2 mechanisms, the energy diagram shown below corresponds to

What kind of reaction does the conversion of A to D represent?  

Select the word or phrase that complete each sentence (constitutional isomers, diastereomers, enantiomers, meso compounds, higher, lower, reaction, addition, carbocation, carbanion, nucleophile, electrophile, elimination, heterolysis, homolysis, reagent, substitution, stronger, weaker, charge, concerted, two step, SN1, SN2, racemization, hyperconjugation, alkyl halides, inversion):  (   Polar protic solvents favor …………………..  mechanism.   Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Select the word or phrase that complete each sentence (constitutional isomers, diastereomers, enantiomers, meso compounds, higher, lower, reaction, addition, carbocation, carbanion, nucleophile, electrophile, elimination, heterolysis, homolysis, reagent, substitution, stronger, weaker, charge, concerted, two step, SN1, SN2, racemization, hyperconjugation, alkyl halides, inversion):     Alkyl halides undergo ……………………………… reactions with nucleophiles.  Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Which of the following conditions favor the SN1 mechanism as opposed to the SN2 mechanism?I. tertiary alkyl halideII. primary alkyl halideIII. polar protic solvent

Which of the following shows a mechanism for a concerted elimination.

What is the most reactive alkyl halide for elimination reactions?

Which of the following statements about a catalyst is true?

Which of the following is the major E2 product formed from the following alkyl halide?