Heats of combustion of graphite carbon and carbon monoxide are respectively - 393.5 kJ mol^(-1) and - 283 kJ mol^(-1). Calculate the heat of formation of carbon monoxide.

Heats of combustion of graphite carbon and carbon monoxide are respect

1.	Heats of combustion of graphite carbon and carbon monoxide are respectively - 393.5 kJ mol^(-1) and - 283 kJ mol^(-1). Calculate the heat of formation of carbon monoxide.
Answer» Solution :`C_(("GRAPHITE")) + O_(2(g)) to CO_(2(g)) , DELTAH = -393.5 kJ "" …(1)` `CO_((g)) + 1/2O_(2(g)) to CO_(2(g)) , DeltaH = -283kJ ""....(2)` Equation (1) - Equation (2), gives `C_(("graphite")) + 1/2O_(2(g)) to CO_((g)), DeltaH = -110.5 kJ`.