A) \[-22\text{ }kJ\text{ }mo{{l}^{-}}^{1}\]
B) \[88\text{ }kJ\text{ }mo{{l}^{-1}}\]
C) \[-92.2\text{ }kJ\text{ }mo{{l}^{-1}}\]
D) \[-183.8\text{ }kJ\text{ }mo{{l}^{-1}}\]
Correct Answer: C
Solution :
\[\Delta H{{{}^\circ }_{reaction}}\,\,=\,\,2\Delta {{H}_{f}}{}^\circ -2\Delta H{{{}^\circ }_{f}}\text{ }HCl\] \[-352.2=2\left( -268.3 \right)-2x\] \[2x=2\left( -268.3 \right)+352.2\] \[2x\,\,=\,\,-184.4\] \[x\,\,=\,\,-92.2\]
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