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Consider the following process:
\( \mathrm{A} \rightarrow 2 \mathrm{~B} ; \Delta \mathrm{H}=+150 \mathrm{~kJ} \)
P
W
\( 3 \mathrm{~B} \rightarrow 2 \mathrm{C}+\mathrm{D} ; \Delta \mathrm{H}=-125 \mathrm{~kJ} \)
\( \mathrm{G}+\mathrm{A} \rightarrow 2 \mathrm{D} ; \Delta \mathrm{H}=+350 \mathrm{~kJ} \)
For \( \mathrm{B}+\mathrm{D} \rightarrow \mathrm{G}+2 \mathrm{C} ; \Delta \mathrm{H} \) will be
(1) \( +525 \mathrm{~kJ} \)
(2) \( +325 \mathrm{~kJ} \)
(3) \( -175 \mathrm{~kJ} \)
(4) \( -325 \mathrm{~kJ} \)
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