Fill in the missing chemical formulae in the tables below.
[tex]\begin{tabular}{|c|c|}
\hline acid & conjugate base \\
\hline [tex]\mathrm{H}_3 \mathrm{O}^{+}[/tex] & थI \\
\hline [tex]\mathrm{H}_2 \mathrm{O}[/tex] & [tex]\square[/tex] \\
\hline [tex]\mathrm{HBr}[/tex] & [tex]\square[/tex] \\
\hline
\end{tabular}
\begin{tabular}{|c|c|}
\hline base & conjugate acid \\
\hline [tex]\mathrm{I}^{-}[/tex] & [tex]\square[/tex] \\
\hline [tex]\mathrm{OH}^{-}[/tex] & [tex]\square[/tex] \\
\hline [tex]\mathrm{H}_2 \mathrm{O}[/tex] & [tex]\square[/tex] \\
\hline
\end{tabular}[/tex]