1.

The bond energies of H - H and I - I bonds are 435 kJ mol^-1 and 150 kJ mol^-1 respectively. If DeltaH_f^o for HI is 26.5 kJ mol^-1 then bond enthalpy of H-I bond is

Answer»

558.5kJ/mol
266kJ/mol
611.5kJ/mol
293kJ/mol

Answer :D


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