What stereoisomers does the following reaction form?

Provide a mechanism for the following S_N1 reactions that feature a rearrangement.

(b)

Suggest a mechanism for the following substitution reactions.

(c)

Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions: (vii) HCl; (viii) HBr; If no reaction occurs, write 'no reaction.'

(o)

Predict the product(s) that would result when molecules (a)–(p) are allowed to react under the following conditions:(vii) HCl; (viii) HBr If no reaction occurs, write 'no reaction.'

(k)

When tert-butyl bromide is heated with an equal amount of ethanol in an inert solvent, one of the products is ethyl tert-butyl ether.

a. What happens to the reaction rate if the concentration of ethanol is doubled?

Explain the difference in reactivity between CH₃O⁺H₂ and CH₃OH in a nucleophilic substitution reaction. (The pK_a of H₃O⁺ is −1.7.)

Which statement best describes the directing effects of the substituents on salicylamide during electrophilic aromatic substitution reactions?

Which of the following best explains why the reaction shown forms two major substitution products?