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GUJCET · Chemistry · Coordination Compounds

Which of the following pairs of complexes whose aqueous solutions gives pale yellow and white precipitates respectively with \(0.1 M AgNO _3\) ?

  1. A \(\left[ Pt \left( NH _3\right)_4 Br _2\right] Cl _2\) and \(\left[ Pt \left( NH _3\right)_4 Cl _2\right] Br _2\)
  2. B \(\left[ Co \left( NH _3\right)_5 NO _3\right] Br\) and \(\left[ Co \left( NH _3\right)_5 Br \right] NO _3\)
  3. C \(\left[ Pt \left( NH _3\right)_4 Cl _2\right] Br _2\) and \(\left[ Pt \left( NH _3\right)_4 Br _2\right] Cl _2\)
  4. D \(\left[ Co \left( NH _3\right)_5 NO _3\right] Cl\) and \(\left[ Co \left( NH _3\right)_5 Cl \right] NO _3\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\left[ Pt \left( NH _3\right)_4 Cl _2\right] Br _2\) and \(\left[ Pt \left( NH _3\right)_4 Br _2\right] Cl _2\)

Step-by-step Solution

Detailed explanation

\(\left[ Pt \left( NH _3\right)_4 Cl _2\right] Br _2 \xrightarrow{AgNO_3} 2AgBr \text{ (pale yellow)}\) \(\left[ Pt \left( NH _3\right)_4 Br _2\right] Cl _2 \xrightarrow{AgNO_3} 2AgCl \text{ (white)}\)