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If the freezing point of a 0.01 molal aqueous solution of a cobalt (III) chloride-ammonia complex (which behaves as a strong electrolyte) is -0.0558^(@)C, the number of chloride (s) in the coordination sphere of the complex if [K_(f) of water =1.86 K kg mol^(-1)] |
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Answer» Solution :`DeltaT_(F)=ixxK_(f)xxm` `i=(DeltaT_(f))/(K_(f)xxm)=((0.0558K))/((1.86 KM^(-1))xx(0.01m))=3` The value of I indicates that in aqueous solution, the complex dissociates to give ions. `[Co(NH_(3))_(5)CI]CI_(2)OVERSET(("aq"))to[Co(NH_(3))_(5)CI]^(+)2CI^(-)` This means that one chlorine ATOM is present in the cooedination sphere. For more details, consult Unit-9 (Co-ordination compounds). |
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