Match the resonance energies 67, 88 and 121 kJ `"mol"^(-1)` for the following compounds.

Anthrance has a resonance energy of 351 kJ mol^(-1) and the resonance energy of benzence is 150.5 kJ mol^(-1) . Which of the two is more easily oxidised or reduced ?

In a hypothetical reaction X to Y , the activation energy for the forward backward reactions are 15 and 9 kJ mol^(-1) respectively. The potential energy of X is 10 kJ mol^(-1) . Which of the following statement is/are correct? (i) The threshold energy of the reaction is 25 kJ mol^(-1) (ii) The potential energy of Y is 16 kJ mol^(-1) (iii) Heat of reaction is 6 kJ mol^(-1) The reaction is endothermic.

Calculate the resonance energy of gaseous benzene form the following data. BE(C-H) = 416.3 kJ mol^(-1) BE(C-C) = 331.4 kJ mol^(-1) BE(C=C) = 591.1 kJ mol^(-1) Delta_("sub")H^(Theta)(C,"graphite") = 718.4 kJ mol^(-1) Delta_("diss")H^(Theta)(H_(2),g) = 435.9 kJ mol^(-1) Delta_(f)H^(Theta) ("benzene", g) = 82.9 kJ mol^(-1)

Hydrogen bond energy is around ............ kJ mol^(-1)