The order of ease of heterolysis of following t-butyl compound is

$$\begin{gathered} \mathrm{I}) {\left({\mathrm{CH}}_3\right)}_3\mathrm{C}-\mathrm{Cl} \\ \mathrm{II}) {\left({\mathrm{CH}}_3\right)}_3\mathrm{C}-\mathrm{OAC} \\ \mathrm{III}) {\left({\mathrm{CH}}_3\right)}_3\mathrm{C}-\mathrm{OH} \end{gathered}$$

Solution: Leaving groups are ${\mathrm{OH}}^{-}$  of acid  ${\mathrm{H}}_2\mathrm{O}$
  $\mathrm{AC}\overline{\mathrm{O}}$  of acid ACOH
  ${\mathrm{Cl}}^{-}$  of acid  HCl

Stronger the acid, weaker the base hence, greater the tendency to leave $AC\overline{O}\text{ of acid }\mathrm{ACOH}$ ${\mathrm{Cl}}^{-}\text{of acid }\mathrm{HCl}$.

Stronger the acid, weaker the base hence, greater the tendency to leave.

$$\begin{gathered} \text{ Acidic strength :- }\mathrm{HCl}>\mathrm{ACOH}>{\mathrm{H}}_2\mathrm{O} \\ \text{ Basic Strength : }{\mathrm{OH}}^{-}>{\mathrm{ACO}}^{-}>{\mathrm{Cl}}^{-} \\ \text{ Leving tendency: }{\mathrm{Cl}}^{-}>{\mathrm{ACO}}^{-}>{\mathrm{OH}}^{-} \end{gathered}$$