A) \[~-\text{ }124.71\text{ kJ}\]
B) \[-\text{ }1.247\text{ J}\]
C) \[~-\text{ }1.247\text{ kJ}\]
D) \[-\text{ }124.71\text{ J}\]
Correct Answer: C
Solution :
\[\Delta H=\Delta E+\Delta {{n}_{g}}RT\] For the reaction, \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}C{{O}_{2}}(g)\] \[\Delta {{n}_{g}}=1-1\frac{1}{2}=-\frac{1}{2}\] \[\therefore \] \[\Delta H-\Delta E=-\frac{1}{2}\times 8.314\times 300\] \[=-1247.1\,\text{J}\] \[=-1247.k\text{J}\]
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