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Question

Which of the following complex will give white precipitate with BaCl2(aq)

A
[Co(NH3)4SO4]NO2
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B
[Cr(NH3)5SO4]Cl
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C
[Cr(NH3)5Cl]SO4
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D
Both (B) and (C)
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Solution

The correct option is B [Cr(NH3)5Cl]SO4
The white precipitate with BaCl2(aq) is due to the formation of BaSO4.

[Cr(NH3)5Cl]SO4[Cr(NH3)5Cl]2++SO24

(Cr(NH3)5Cl]2++SO24+BaCl2[Cr(NH3)5Cl]Cl2+BaSO4+HCl.

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