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Use the data from table to estimate the enthalpy of formation of $\mathrm{CH}_3 \mathrm{CHO}$.
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Verified Answer
The correct answer is:
$-200 \mathrm{~kJ} \mathrm{~mol}^{-1}$
$2 \mathrm{C}+2 \mathrm{H}_2+\frac{1}{2} \mathrm{O}_2 \longrightarrow \mathrm{CH}_3 \mathrm{CHO}$
$\Delta H_f=\Sigma \mathrm{BE}_{\text {(reactants) }}-\Sigma \mathrm{BE}_{\text {(products) }}$
$=2450-2650$
$=-200 \mathrm{~kJ} / \mathrm{mol}$
$\Delta H_f=\Sigma \mathrm{BE}_{\text {(reactants) }}-\Sigma \mathrm{BE}_{\text {(products) }}$
$=2450-2650$
$=-200 \mathrm{~kJ} / \mathrm{mol}$
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