Which of the following will give the fastest SN1 reaction?
Question 2Which set of reaction conditions represents the best way to carry out the following transformation?

1.AcOH
2.NaOAc in AcOH
3.NaOAc in H2O
4.NaOAc in DMSO
5.AcOH in HMPA
Question 3Which of the following reagents is the best nucleophile for an S
N2 reaction?
1.methanol
2.methoxide
3.acetate
4.hydroxide
5.water