| Compound name | Iron(III) oxide | Aluminum oxide | Zinc oxide |
| Enthalpy of formation kJ.mol$^{-1}$ | $-825$ | $-1675$ | $-3325$ |
\textbf{219-} In a thermite reaction, if aluminum metal is used instead of zinc metal, by how many kJ will $\Delta H$ of the reaction change at STP?
\begin{center}
\begin{tabular}{|c|c|c|c|}
\hline
\textbf{Compound name} & \textbf{Iron(III) oxide} & \textbf{Aluminum oxide} & \textbf{Zinc oxide} \\
\hline
\textbf{Enthalpy of formation kJ.mol$^{-1}$} & $-825$ & $-1675$ & $-3325$ \\
\hline
\end{tabular}
\end{center}
\begin{center}
(1) $135\circ$ \hfill (2) $128\circ$ \hfill (3) $71\circ$ \hfill (4) $53\circ$
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