The enthapy of formation of carbon monoxide and steam are -110.5 and -243.0 kJ respectively.Calculate the heat of the reaction when steam is passed over coke as : `C(s) + H_(2)O(g) to CO(g) + H_(2)(g)` .

The enthalpy of formation of C_(2)H_(5)OH(l) , CO_(2)(g) and H_(2)O(l) are - 277.0, -393.5 and -285.5 kJ/mol respectively.Calculate the enthalpy change for the reaction: C_(2)H_(5)OH(l) + 3O_(2)(g) to 2CO_(2)(g) + 3H_(2)O(l) .

The heat of formations of CO_((g)) and CO_(2(g)) are -26.4 kcal and -94.0 kcal respectively. The heat of combustion of carbon monoxide will be _________ .

DeltaH_(t)^(@) for CO_(2)(g) and H_(2)O(g) are -393.5, -110.5 and -241.8 kJ"mol"^(-1) respectively. The standard enthalpy change (in kJ) for the reaction. CO_(2)(g) + H_(2)(g) to CO(g) + H_(2)O(g) is: