The combustion of benzene (L) gives$C{O}_{2}$ (g) and ${H}_{2}O$ (L). Given that heat of combustion of benzene at constant volume is -3263.9 kJ/mol at 25°C, heat of combustion (in kJ/mol) of benzene at constant pressure will be: (R = 8.314J${K}^{-1}mo{l}^{-1}$)

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Correct answer: d) -3267.6. Using ΔH = ΔU + ΔnRT , with ΔU = -3263.9 kJ/mol , Δn = -1.5 , R = 8.314 × 10⁻³ kJ/mol·K , and T = 298 K , $\Delta H=−3263.9−3.717=−3267.6\text{ kJ/mol}$ Correct answer: (D) .

The combustion of benzene (L) gives\(C{O}_{2}\) (g) and \({H}_{2}O\) (L). Given that heat of combustion of benzene at co…

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