Chemistry · THERMODYNAMICS

Consider the combustion of liquid benzene: \( 2\text{C}_6\text{H}_6(l) + 15\text{O}_2(g) \rightarrow 12\text{CO}_2(g) + 6\text{H}_2\text{O}(l) \) at \( 298\text{ K} \). The difference between the enthalpy of reaction and internal energy change, \( (\Delta H - \Delta U) \), per mole of benzene combusted is: (Take \( R = 8.314\text{ J}\cdot\text{K}^{-1}\cdot\text{mol}^{-1} \))

1. A
   \( -7.43\text{ kJ} \)
2. B
   \( +3.72\text{ kJ} \)
3. C
   \( -1.86\text{ kJ} \)
4. D
   \( -3.72\text{ kJ} \)