Put these compounds in order of decreasing SN2 reaction rate ...

[Marty]

Put these compounds in order of decreasing SN2 reaction rate (left to right).
 
 

a. 1, 2, 3, 4
  b. 4, 3, 2, 1
  c. 1, 2, 4, 3
  d. 3, 4, 2, 1
  e. 3, 2, 4, 1

Question 2

Which compound would react fastest in an SN2 reaction?
 

Question 3

Which conditions favor an efficient (fast, high yield) SN2 reaction between an appropriate alkyl halide and
  a nucleophile which has no charge?
  a. high concentration of a strong nucleophile, polar aprotic solvent
  b. high concentration of a weak nucleophile, nonpolar solvent
  c. low concentration of a strong nucleophile, polar aprotic solvent
  d. low concentration of a weak nucleophile, nonpolar solvent
  e. high concentration of a strong nucleophile, nonpolar solvent

[Eunice618]

Answer to Question 1

a

Answer to Question 2

c

Answer to Question 3

a