# Problem: Use average bond energies together with the standard enthalpy of formation of C(g) (718.4 kJ/mol ) to estimate the standard enthalpy of formation of gaseous benzene, C6H6(g). (Remember that average bond energies apply to the gas phase only.)

###### FREE Expert Solution

For this problem, we are being asked to estimate the standard enthalpy of formation of gaseous benzene, C6H6(g)

Step 1. Write the balanced equation

6 C (s) + 3 H(g) → C6H6 (g)

Step 2. Calculate the entalphy for formation

Recall that the change of enthalpy for a chemical reaction (ΔH) can be calculated using bond energies:

To determine the enthalpy of reaction, we need to first see what bonds are present in the reactants and the products.

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###### Problem Details

Use average bond energies together with the standard enthalpy of formation of C(g) (718.4 kJ/mol ) to estimate the standard enthalpy of formation of gaseous benzene, C6H6(g). (Remember that average bond energies apply to the gas phase only.)