question_answer

Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below:

\[\frac{1}{2}C{{l}_{2}}(g)\xrightarrow{\frac{1}{2}{{\Delta }_{diss}}{{H}^{\Theta }}}Cl(g)\xrightarrow{{{\Delta }_{eg}}{{H}^{\Theta }}}C{{l}^{-}}\]\[(g)\xrightarrow{\frac{1}{2}{{\Delta }_{hyd}}{{H}^{\Theta }}}C{{l}^{-}}(aq)\]

The energy involved in the conversion of

\[\frac{1}{2}C{{l}_{2}}(g)\] to \[C{{l}^{-}}(aq)\]

(using the data, \[{{\Delta }_{diss}}H_{C{{l}_{2}}}^{\Theta }=240\,kJ\,mo{{l}^{-1}},\,{{\Delta }_{eg}}H_{Cl}^{\Theta }=-349\]\[kJ\,mo{{l}^{-1}},{{\Delta }_{hyd}}{{H}_{C{{l}^{-}}}}=-381\,kJ\,mo{{l}^{-1}})\] will be

    AIEEE  Solved  Paper-2007

A) - 850 kJ \[mo{{l}^{-1}}\]

B) +120 kJ \[mo{{l}^{-1}}\]                

C) +152 kJ \[mo{{l}^{-1}}\]

D) - 610 kJ \[mo{{l}^{-1}}\]