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Assume each reaction is carried out in an open container.
For which reaction will \( \Delta \mathrm{H}=\Delta \mathrm{E} \) ?
(a) \( \mathrm{C}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O} \) (g) \( \rightarrow 2 \mathrm{H}_{2} \) (g) \( +\mathrm{CO}_{2} \) (g)
(b) \( \mathrm{PCl}_{5} \) (g) \( \rightarrow \mathrm{PCl}_{3} \) (g) \( +\mathrm{Cl}_{2} \) (g)
(c) \( 2 \mathrm{CO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{CO}_{2} \) (g)
(d) \( \mathrm{H}_{2}(\mathrm{~g})+\mathrm{Br}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{HBr}(\mathrm{g}) \)
\( \mathrm{W} \)
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