The combustion equations of carbon and carbon monoxide are as follows: C + O2 = CO2, ΔH = – 394 kJ/kg .mole CO + ½ O2 = CO2, ΔH = – 284.5 kJ/kg. mole. The heat of formation of CO is _____________ kJ/kg. mole?
Correct answer: A
Explanation
We use the given equations to find $\Delta H_f^\circ$ for CO. The calculation yields -109.5 kJ/kg. mole.