98. Regarding the rusting process of iron, how many of the following statements are correct?
$E^\circ$ of the overall reaction is positive.
The only product of the half-reaction of oxidation is dissolved in water as an anion.
The oxidizing and reducing species in the overall reaction are gas and solid, respectively.
For every mole of iron converted to rust, three moles of electrons are exchanged.
(1) 1 (2) 2 (3) 3 (4) 4
\textbf{98.} Regarding the rusting process of iron, how many of the following statements are correct?
\begin{itemize}
\item $E^\circ$ of the overall reaction is positive.
\item The only product of the half-reaction of oxidation is dissolved in water as an anion.
\item The oxidizing and reducing species in the overall reaction are gas and solid, respectively.
\item For every mole of iron converted to rust, three moles of electrons are exchanged.
\end{itemize}
\hspace{2cm} (1) 1 \hspace{2cm} (2) 2 \hspace{2cm} (3) 3 \hspace{2cm} (4) 4
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