Heats of combustion of garphite carbon and carbon monoxide are respectively -393.5 KJ mol^(-1) and -110.5 "mol"^(-1). Then determine the bond enthalpies.

Heats of combustion of garphite carbon and carbon monoxide are respect

1.	Heats of combustion of garphite carbon and carbon monoxide are respectively -393.5 KJ mol^(-1) and -110.5 "mol"^(-1). Then determine the bond enthalpies.
Answer» Solution :`C_(("graphite"))+O_(2)(g) to Co_(2)(g):DeltaH=-393.5KJ....(1)` `CO_((g))+ 1/2O_(2)(g) to CO_(2)(g) , DeltaH=-110.5KJ....(2)` EQUATION (1) - equation (2) ,gives `c_(("graphite"))+1/2O_(2)(g) to Co_((g)),DeltaH=-283KJ` The HEAT of FORMATION of carbon monoixde =-392.5-(-110.5)=-283KJ `mol^(-1)`. Thermochemical equation,`c_(("graphite"))+1/2O_(2)(g) to Co_((g)),DeltaH=-283KJ`.