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4. You have been given 2 compounds, [Co(NH3)5(SO4)]Be and [Co(NH3)5Br]SO4, in separate vials. However you do...

4. You have been given 2 compounds, [Co(NH3)5(SO4)]Be and [Co(NH3)5Br]SO4, in separate vials. However you do not know which compound is in each vial. How would you determine qualitatively which compounds are in each vial by using instrumental and chemical techniques. (10)

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Answer #1

by using AgNO3

If you add AgNO3 solution to both the compounds [Co(NH3)5(SO4)]Br will give AgBr precipitape    but [Co(NH3)5Br]SO4 will not give any precipitape.

by using BaCl2

If you add BaCl2 solution to both the compounds [Co(NH3)5(SO4)]Br will not give any precipitape    but [Co(NH3)5Br]SO4 will give BaSO4 precipitape.

by colour

[Co(NH3)5Br]SO4      violet colour

[Co(NH3)5(SO4)]Br    red colour

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