iran-konkur 2019 Q217

iran-konkur · Other · konkur-riazi_1398_specialized_new-curriculum Not Maths
217. Using the data in the table below, for the reaction: $\text{CO}(\text{g}) + 2\text{H}_2(\text{g}) \rightarrow \text{CH}_3\text{OH}(\text{g})$, $\Delta H$ is how many kilojoules?
Bond type$C\equiv O$$H-H$$C-H$$C-O$$O-H$
Enthalpy $(\text{kJ.mol}^{-1})$$1075$$436$$414$$351$$464$

(1) $-210$ (2) $-180$ (3) $-110$ (4) $-80$
\textbf{217.} Using the data in the table below, for the reaction: $\text{CO}(\text{g}) + 2\text{H}_2(\text{g}) \rightarrow \text{CH}_3\text{OH}(\text{g})$, $\Delta H$ is how many kilojoules?

\begin{center}
\begin{tabular}{|c|c|c|c|c|c|}
\hline
Bond type & $C\equiv O$ & $H-H$ & $C-H$ & $C-O$ & $O-H$ \\
\hline
Enthalpy $(\text{kJ.mol}^{-1})$ & $1075$ & $436$ & $414$ & $351$ & $464$ \\
\hline
\end{tabular}
\end{center}

(1) $-210$ \hfill (2) $-180$ \hfill (3) $-110$ \hfill (4) $-80$

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