1.

Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below : 1/2Cl_(2)(g) overset(1/2 Delta_("diss")H^(Θ))(rarr)Cl(g) overset(Delta_(eg)H^(Θ))(rarr)Cl^(-)(g) overset(Delta_("hyd")H^(Θ))(rarr)Cl^(-)(aq) The energy involved in the conversion of 1/2 Cl_(2)(g) to Cl^(-)(aq) (using the data, Delta_("diss")H_(Cl_(2))^(Θ)=240" kJ mol"^(-1), Delta_("eg") H_(Cl)^(Θ)=-349" kJ mol"^(-1), Delta_("hyd")H_(Cl^(-))^(Θ)=-381" kJ mol"^(-1)) will be -

Answer»

`-610" kJ MOL"^(-1)`
`-850" kJ mol"^(-1)`
`+ 120" kJ mol"^(-1)`
`+ 152" kJ mol"^(-1)`

SOLUTION :`DeltaH_(1/2 Cl_(2) rarr CL^(-))=1/2 DeltaH_("Diss")^(Θ)+Delta_(Eg)H^()+Delta_("hyd")H^(Θ)=1/2 xx240+(-349)+(-381) =-610" kJ/mol"`


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