Question

Consider the following reaction:
2 C6H6+15 O2→12 CO2+6 H2O $Δ_r𝐻^0_{298}$ =−3120 kJ mol−1.
A closed system initially contains 5 moles of benzene and 25 moles of oxygen under standard conditions at 298 K. The reaction was stopped when 17.5 moles of oxygen is left. The amount of heat evolved during the reaction is____kJ.
(round off to the nearest integer)

Answer 1

The correct answer is: 1560