A) \[-219.0\,kJ\,mo{{l}^{-1}}\]
B) \[-109.5\,kJ\,mo{{l}^{-1}}\]
C) \[-175.0\,kJ\,mo{{l}^{-1}}\]
D) \[-87.5\,kJ\,mo{{l}^{-1}}\]
Correct Answer: B
Solution :
\[C+{{O}_{2}}\to C{{O}_{2}}+394\,kJ\]. \[2C+2{{O}_{2}}\to 2C{{O}_{2}}+788\,kJ\] ?.(i) \[2CO+{{O}_{2}}\to 2C{{O}_{2}}+569\,kJ\] ?.(ii) \[2C{{O}_{2}}\to 2CO+{{O}_{2}}-569\,kJ\] ?..(iii) eq. (i) + eq. (iii) = ?109.5 kJ mol?1.
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