Determine the Heat of Reaction for the Oxidation of Iron $\frac{3}{2}$

question 48

Multiple Choice

Determine the heat of reaction for the oxidation of iron, 2Fe(s) + $\frac{3}{2}$ O₂(g) ? Fe₂O₃(s)
Given the following thermochemical equations:
$\begin{array}{ll}2 \mathrm{Fe}(s) +6 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow 2 \mathrm{Fe}(\mathrm{OH}) _{3}(s) +3 \mathrm{H}_{2}(g) & \Delta H=321.8 \mathrm{~kJ} \\\mathrm{Fe}_{2} \mathrm{O}_{3}(s) +3 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow 2 \mathrm{Fe}(\mathrm{OH}) _{3}(s) & \Delta H=288.6 \mathrm{~kJ} \\2 \mathrm{H}_{2}(g) +\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{H}_{2} \mathrm{O}(l) & \Delta H=-571.7 \mathrm{~kJ}\end{array}$

• A) ?1681.9 kJ
• B) ?1143.1 kJ
• C) ?824.4 kJ
• D) 33.2 kJ
• E) 38.7 kJ

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