Calculate heat of formation of \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l) \) at constant vo...

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Calculate heat of formation of \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l) \) at constant volume from the following data at \( 298 \mathrm{~K} \).
\( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l)+3 \mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{CO}_{2}(g)+3 \mathrm{H}_{2} \mathrm{O}(l) ; \)
\( \Delta \mathrm{H}^{\ominus}=-1365.6 \mathrm{~kJ} . \)
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