🛠️ JEE🧪 Chemistry

Consider a mixture 'X' which is made by dissolving 0.4 mol of [Co(NH 3 ) 5 SO 4 ]Br and 0.4 mol of [Co(NH 3 ) 5 Br] SO 4…

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Consider a mixture 'X' which is made by dissolving 0.4 mol of [Co(NH3)5SO4]Br and 0.4 mol of [Co(NH3)5Br] SO4 in water to make 4 L of solution. When 2 L of mixture 'X' is allowed to react with excess of AgNO3, it forms precipitate 'Y'. The rest 2 L of mixture 'X' reacts with excess BaCl2 to form precipitate 'Z'. Which of the following statements is correct?

a

0.2 mol of 'Z' is formed.

b

0.4 mol of 'Z' is formed.

c

'Y' is BaSO4 and 'Z' is AgBr.

d

0.1 mol of 'Y' is formed.

✓ Correct answer: a)

0.2 mol of 'Z' is formed.

Explanation

0.4 mol [Co(NH3)5SO4]Br + 0.4 mol [Co(NH3)5 Br] SO4 are present in 4 lit. solution.

2 lit. of mixture will contain 0.2 mol of each complex.

2 lit. mixture on reaction with excess AgNO3, 0.2 mole AgBr will be formed (Y).

2 lit. mixture on reaction with excess BaCl2, 0.2 mole BaSO4 will be formed (Z).

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