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)]`

Answer

1

Explanation

`DeltaT=iK_(f)xxm`
`0.0558=ixx1.86xx0.01`
`i=3`
Thus, the complex should give three ions in the aqueous solution. Molecular formula of the complex will be :
`[Co(NH_(3))_(5)C]Cl_(2)`
`:.` Only one chloride ion will be with in the coordination sphere.