What happens when ethyl chloride is reacted with sodium ethoxide?

What happens when ethyl bromide is treated with caustic soda?

Complete the following equation:

${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}+\mathrm{KOH}\left(\mathrm{aq}\right)⟶$

Complete the following equation:

$-+{\mathrm{PBr}}_3⟶3{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Br}+-$

Explain ${\mathrm{S}}_{\mathrm{N}}1$ reactions.

Consider the following equations:

(i) ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Cl}\stackrel{\mathrm{aq}. \mathrm{NaOH}}{⟶}{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

(ii) ${\left({\mathrm{CH}}_3\right)}_3\mathrm{CCl}\stackrel{\mathrm{aq}. \mathrm{NaOH}}{⟶}{\left({\mathrm{CH}}_3\right)}_3\mathrm{COH}$

Which of these reaction follows ${\mathrm{S}}_{\mathrm{N}}1$ mechanism and which the ${\mathrm{S}}_{\mathrm{N}}2$ mechanism ?

What is an ${\mathrm{S}}_{\mathrm{N}}1$ mechanism? Give an example of a reaction following an ${\mathrm{S}}_{\mathrm{N}}1$ mechanism and explain why the mechanism is considered to be ${\mathrm{S}}_{\mathrm{N}}1$.

How are the following conversion carried out?

Chlorobenzene into aniline

How are the following conversion carried out?

Aniline into chlorobenzene