1 \(\mathrm{HSO}_{4}^{-}\)
2 \(\mathrm{NO}_{3}^{-}\)
3 \({\rm{C}}{{\rm{H}}_3}{\rm{CO}}{{\rm{O}}^ - }\)
4 \(\mathrm{Cl}^{-}\)
Explanation:
\[\begin{gathered}
{\text{C}}{{\text{H}}_{\text{3}}}{\text{CO}}{{\text{O}}^{{\text{ - }}}}{\text{ + }}{{\text{H}}^{{\text{ + }}}} \to {\text{C}}{{\text{H}}_{\text{3}}}{\text{COOH}} \hfill \\
{\text{Strong}}{\mkern 1mu} {\mkern 1mu} {\text{base}}{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\text{Weak}}{\mkern 1mu} {\mkern 1mu} {\text{acid}} \hfill \\
\end{gathered} \]
Acid is weak but conjugate base is strong