Question

Which is the stronger base in each pair?

Answer 1

If acid is strong, its conjugate base is weak and vice-versa.So stronger base is
(a) ${ClO}_2^{-}$
(b) ${OH}^{-}$
(c) ${Cl}^{-}$
(d) ${CH}_3{CH}_2^{-}$
(e) ${NO}_2^{-}$
(f) $H_2{PO}_2^{-}$