26. Conjugate acid of a weak base is always stronger. What will be the decreasing order of basic strength of the following conjugate bases?

Conjugate acid of the given bases are H2O, ROH, CH3COOH and HCl. Order of their acidic strength is
$\mathrm{HCl}>{\mathrm{CH}}_{3}\mathrm{COOH}>{\mathrm{H}}_{2}\mathrm{O}>\mathrm{ROH}$
Hence, order of basic strength of their conjugate bases is
${\mathrm{Cl}}^{-}<{\mathrm{CH}}_{3}{\mathrm{COO}}^{-}<{\mathrm{OH}}^{-}<{\mathrm{RO}}^{-}$