Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below12Cl2g →12 ∆diss H⊝Clg  →∆HEg⊝  Cl-g  → ∆hyd H⊝Cl-aq  The energy involved in the conversion of 12Cl2g  to Cl-aq(Using the data, ∆diss HCl2⊝ = 240 kJ  mol-1)∆Eg HCl2⊝ = -349 kJ  mol-1,∆hyd HCl2⊝ = -381 kJ  mol-1)  will be