A) \[-676.5\,kJ\]
B) \[676.5\,kJ\]
C) \[110.5\,kJ\]
D) \[-110.5\,kJ\]
Correct Answer: D
Solution :
\[C(s)+{{O}_{2}}(g)\to C{{O}_{2}}(g)\] \[\Delta H=-393.5\,KJ\,mo{{l}^{-1}}\] ?..(i) \[CO(g)+1/2{{O}_{2}}(g)\to C{{O}_{2}}(g)\] \[\Delta H=-283\,KJ\,mo{{l}^{-1}}\] ?..(ii) On substracting equation (ii) from equation (i) We get \[C(s)+{{O}_{2}}(g)\to CO(g)\]; \[\Delta H=-110.5\,KJ\,mo{{l}^{-1}}\] The enthalpy of formation of carbon monooxide per mole \[=-110.5\,KJ\,mo{{l}^{-1}}\]
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