Problem: The hydrocarbons acetylene (C2 H2 ) and benzene (C6 H6 ) have the same empirical formula. Benzene is an "aromatic" hydrocarbon, one that is unusually stable because of its structure.Determine the fuel value in kJ/g for benzene.

FREE Expert Solution

We are asked to determine the fuel value of benzene.


2 C6H6 + 15 O2 → 12 CO2 +6 H2O


H°rxn= H°f, products - H°f,reactants H°rxn= [4H°f, CO2 +2H°f, H2O] - [2H°f,C6O6+5H°f,O2]H°rxn= [12(-395.5 kJ) +6(-285.83 kJ)] - [2(49.0 kJ)+15(0 kJ)]H°rxn= -6558.98 kJ


View Complete Written Solution
Problem Details

The hydrocarbons acetylene (C2 H2 ) and benzene (C6 H6 ) have the same empirical formula. Benzene is an "aromatic" hydrocarbon, one that is unusually stable because of its structure.

Determine the fuel value in kJ/g for benzene.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Calorimetry concept. You can view video lessons to learn Calorimetry. Or if you need more Calorimetry practice, you can also practice Calorimetry practice problems.