1.

One molal solution of a complex of cobalt chloeide with NH_(3) in aqueous s0olution shows boiling point elevaton of 2.08^(@). Assuming that the complex is compleltely ionised in solution, the xomplex is (K_(b)"for water"=0.52 K kg mol^(-1)).

Answer»

`[Co(NH_(3))_(6)]CI_(3)`
`[Co(NH_(3))_(5)CI]CI_(2)`
`[Co(NH_(3))_(4)CI]CI_(2)I CI`
None of these.

Solution :`(DeltaT_(b))/(K_(b)m)=((2.08K))/((0.52 K mol^(-1))XX(1m))=4`
This shows that the complex produces FOUR ions in aqueous solution. Correct option is (a).
`[CO(NH_(3))_(6)]CI_(3)overset(("AQ"))HARR[CO(NH_(3))_(6)]^(+)+3CI^(-)`


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