A) -1369.0 kJ
B) -1364.0kJ
C) -1361.5 kJ
D) -1371.5 kJ
Correct Answer: B
Solution :
\[{{C}_{2}}{{H}_{5}}OH(\ell )+3{{O}_{2}}(g)\xrightarrow[{}]{{}}2C{{O}_{2}}(g)+3{{H}_{2}}O(\ell )\] \[\Delta {{n}_{g}}=2-3=-1\] \[\Delta U=\Delta H-\Delta {{n}_{g}}RT\] \[=-1366.5-(-1)\times \frac{8.314}{{{10}^{3}}}\times 300\] \[=-1366.5+0.8314\times 3=-1364KJ\]You need to login to perform this action.
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