The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?
Correct answer: C
Explanation
The reaction is exothermic, so the heat change (ΔH) must be negative. The calculation should use stoichiometry based on mass.