Calculate the resonance energy of using Kekule formula for from the following data

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Calculate the resonance energy of

\text{C}_6\text{H}_6

using Kekule formula for

\text{C}_6\text{H}_6

from the following data. (1)

\Delta H_f^\circ

for

\text{C}_6\text{H}_6 = -358.5 \text{ kJ mol}^{-1}

(2) Heat of atomisation of C = 716.8

\text{kJ mol}^{-1}

(3) Bond energy of C—H, C—C, C

\equiv

C and H—H are 490, 340, 620 and 436.9

\text{kJ mol}^{-1}

respectively.