Which of the following is a BAD leaving group? A. H_2 O B. I^- C. Br^- D. Cl^- E

Question

Which of the following is a BAD leaving group? A. H_2 O B. I^- C. Br^- D. Cl^- E.^- OH In polar protic solvents, nucleophile strength trends are ___ base strength trends. This is because in ___ solvents anions are shielded from the reaction, while in ___ solvents they are not. A. opposite to; polar protic; polar aprotic B. parallel to; polar protic; polar aprotic C. opposite to; polar aprotic; polar protic D. parallel to; polar aprotic; polar protic E. nucleophile strength and base strength do not exhibit trends on the periodic table Which statement concerning the S_N 2 mechanism is false? A. It exhibits second-order kinetics B. It occurs in one step C. The nucleophile attacks from the backside D. 3 degree alkyl halides react the fastest with S_N 2 reactions Which statement concerning the S_N 1 mechanism is false? A. Its energy diagram contains only 1 energy of activation B. It occurs through a carbocation intermediate C. The nucleophile attacks equally from both sides of the molecule D. More substituted alkyl halides react faster Determine the mechanism of nucleophilic substitution for the following reaction: A. S_N 1 B. S_N 2 C. E1 D. E2 Determine the mechanism of nucleophilic substitution for the following reaction: A. S_N 1 B. S_N 2 C. E1 D. E2

Explanation / Answer

5. Bad nucelophile here would be,

A. H2O

6. In polar protic solvent, nucleophile strength trends to .... base strength trends. This is because in .... solvents anions are shielded from the reaction, while in ..... solvent they are not.

A. opposite to, polar protic, polar aprotic

7. False statement reagrding Sn2 reaction,

D. 3o alkyl halide reacts fastest with Sn2 reaction

8. False statement reagrding Sn1 reaction,

A. Its energy diagram has only one energy of activation

9. Mechanism of nucelophilic substitution for the given reaction,

B. Sn2

10. Mechanism of nucelophilic substitution for the given reaction,

B. Sn2

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