Ncert Exercises & Solutions

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

${OH}^{-}, {RO}^{-} {CH}_{3} {COO}^{-}, {Cl}^{-}$

Conjugate acid of the given bases are H₂O, ROH, CH₃COOH and HCl. Order of their acidic strength is

HCl > {CH}_{3} COOH > H_{2} O > ROH

Hence, order of basic strength of their conjugate bases is

{Cl}^{-} < {CH}_{3} {COO}^{-} < {OH}^{-} < {RO}^{-}