The heats of combustion of carbon and carbon monoxide are -393.5 and -283.5 kJ"mol"^(-1) respectively. The heat of formation (in kJ) of carbon monoxide per mole is

The heats of combustion of carbon and carbon monoxide are -393.5 and -

1.	The heats of combustion of carbon and carbon monoxide are -393.5 and -283.5 kJ"mol"^(-1) respectively. The heat of formation (in kJ) of carbon monoxide per mole is
Answer» `110.5` `676.5` `-676.5` `-110.5` SOLUTION :(i) `C(s) +O_(2)(g) to CO_(2)(g)DELTAH = -393.5 kJ"mol"^(-1)` (II) `CO(g) +1/2 O_(2)(g) to CO_(2)(g)DeltaH = -283.5 kJ"mol"^(-1)` SUBTRACTING equation (ii) from equation (i) `C(s) + 1/2O_(2)(g) to CO(g)= - 110.0 kJ"mol"^(-1)`.