232 – A species of fish can survive in pH between 6 and 8. If the volume of the aquarium for keeping this fish is $20\,\text{L}$, and the neutral condition holds, adding which of the following will cause the death of the fish?
$100\,\text{mL}$ of solution $10^{-4}\,\text{mol/L}$ hydrochloric acid
$100\,\text{mL}$ of solution $0.01\,\text{mol/L}$ sodium hydroxide
$50\,\text{mL}$ of solution $8\times10^{-3}\,\text{mol/L}$ sodium acetate $\left(K_b = 6\times10^{-10}\right)$
\textbf{232 –} A species of fish can survive in pH between 6 and 8. If the volume of the aquarium for keeping this fish is $20\,\text{L}$, and the neutral condition holds, adding which of the following will cause the death of the fish?
\begin{enumerate}
\item $0.1$ mol aluminum oxide $\text{Al}_2\text{O}_3(\text{s})$
\item $100\,\text{mL}$ of solution $10^{-4}\,\text{mol/L}$ hydrochloric acid
\item $100\,\text{mL}$ of solution $0.01\,\text{mol/L}$ sodium hydroxide
\item $50\,\text{mL}$ of solution $8\times10^{-3}\,\text{mol/L}$ sodium acetate $\left(K_b = 6\times10^{-10}\right)$
\end{enumerate}