Describe a simple test to distinguish between the following pairs of compounds
`[Co(NH_(3))_(5)Br]SO_(4)` and (B) `[Co(NH_(3))_(5)SO_(4)]Br`

Explanation

To distinguish between the two coordination compounds `[Co(NH₃)₅Br]SO₄` and `[Co(NH₃)₅SO₄]Br`, we can perform the following tests:

### Step 1: Identify the Composition of Each Complex
- The first complex, `[Co(NH₃)₅Br]SO₄`, has the bromide ion (Br⁻) inside the coordination sphere and the sulfate ion (SO₄²⁻) outside.
- The second complex, `[Co(NH₃)₅SO₄]Br`, has the sulfate ion inside the coordination sphere and the bromide ion outside.

### Step 2: Test the First Complex `[Co(NH₃)₅Br]SO₄`
- **Procedure**: Take a sample of the first complex and add barium chloride (BaCl₂) solution to it.
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