$BF_3$ acts as an acid according to .............

For the reaction $HSO_4^- + OH^- \to SO_4^{2-} + H_2O$,which statement is correct regarding the conjugate acid-base pair?

The successive equilibrium constants for the stepwise dissociation of a tribasic acid are $K_1$,$K_2$ and $K_3$,respectively. The equilibrium constant for the overall dissociation is

If $pK_b$ of a base is $5$,then $K_a$ of its conjugate acid will be

Arrange the anions $(p) \text{CH}_3^{-}, (q) \text{NH}_2^{-}, (r) \text{OH}^{-}, (s) \text{F}^{-}$ in decreasing order of their basic strength.

The ionization constants of two bases $AOH$ and $BOH$ are $K_{b1}$ and $K_{b2}$ respectively. Their relationship is $pK_{b1} < pK_{b2}$. Which of the following does not represent the base with the highest $pH$?