Solution of task 95 of Chemistry Book Shimanovich 2003

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• The combustion reaction of benzene is expressed by a thermochemical equation:

C6H6 (x) + 7 1/2 O2 (r) = 6CO2 (g) + 3H2O (g); H =?

Calculate the thermal effect of this reaction if it is known that the molar heat of vaporization of benzene is +33.9 kJ.

Answer: -3135.58 kJ.