For the reaction carried out under standard conditions

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

For the reaction

C(\text{graphite}) + \tfrac{1}{2} O_2(\text{g}) \to CO(\text{g})

carried out under standard conditions, the standard enthalpy change of reaction is

-110.5\,\text{kJ}

. Given that the standard enthalpies of formation of

C(\text{graphite})

and

O_2(\text{g})

are both

0\,\text{kJ mol}^{-1}

, calculate the standard enthalpy of formation,

\Delta H_f^\circ

, of

CO(\text{g})

\text{kJ mol}^{-1}