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A mixture \(X\) containing \(0.02 mol\) of \(\left[ Co \left( NH _{3}\right)_{5} SO _{4} Br \right.\) and \(0.02 mol\) of \(\left[ CO \left( NH _{3}\right)_{5} Br \right] SO _{4}\) was prepared in \(2 L\) of solution of \(\left[ Co \left( NH _{3}\right)_{5} SO _{4} Br 0.01 mol \right.\) of
\(\left[ Co \left( NH _{3}\right)_{5} Br \right] SO _{4}\)
\(1 L\) of mixture \(X+\) excess \(A g N O_{3} \rightarrow 0.01 mol A g B r\)
\(1 L\) of mixture \(X+\operatorname{excess} B a C l_{2} \rightarrow 0.01 mol B a S O_{4}\)
This is according to the following reactions taking place:
\(\left[ Co \left( NH _{3}\right)_{5} Br \right] SO _{4}+ AgNO _{3} \rightarrow\)
\(\left[ Co \left( NH _{3}\right)_{5} SO _{4}\right] NO _{3}+ AgBr\)
\(\left. Co \left( NH _{3}\right)_{5} Br \right] SO _{4}+ BaCl _{3} \rightarrow\)
\(\left[ Co \left( NH _{3}\right)_{5} Br \right] Cl _{2}+ BaSO _{4} J\)