1.

Enthalpy for the oxidation of graphite to CO_2 and CO to CO_2 can easily be measured. For these conversions, the heat of combustion values are -393.5 kJ and - 283.5 kJrespectively.find the enthalpy of combustion of graphite to CO

Answer»

Solution :From these data the enthalpy of combustion of graphite to CO can be calculated HESS.s law.
The reactions involved in this process can be expressed as follows

ACCORDING to Hess law ,
`DeltaH_1=DeltaH_2+DeltaH_3`
-393.5 kJ =X- 283.5 kJ
X=-110.5 kJ


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