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Ionisation isomers with sulphate and halide: tests with AgNO3 and BaCl2

This type of question, asked 3 times: 30 Jan 2023, 7 Apr 2025, 24 Jan 2026 S1. All 3 questions below, oldest first.

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  1. Question 1

    30 Jan 2023

    125
    1 L,0.02M1\text{ }L,0.02M solution of [Co(NH3)5SO4]Br\left\lbrack Co\left( NH_{3} \right)_{5}SO_{4} \right\rbrack Br is mixed with 1 L,0.02M1\text{ }L,0.02M solution of [Co(NH3)5Br]SO4\left\lbrack Co\left( NH_{3} \right)_{5}Br \right\rbrack SO_{4}. The resulting solution is divided into two equal parts ( X)X) and treated with excess of AgNO3AgNO_{3} solution and BaCl2BaCl_{2} solution respectively as shown below: 1 L1\text{ }L solution (X)+AgNO3(X) +AgNO_{3} solution (excess) →Y\rightarrow Y 1 L1\text{ }L Solution (X)+BaCl2(X) +BaCl_{2} solution (excess) →Z\rightarrow Z The number of moles of YY and ZZ respectively are

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  2. Question 2

    7 Apr 2025

    44
    An octahedral complex having molecular composition Co.5NH3.Cl2.SO4Co.5NH_{3}.Cl_{2}.SO_{4} has two isomers A and B . The solution of A gives a white precipitate with AgNO3AgNO_{3} solution and the solution of B gives white precipitate with BaCl2BaCl_{2} solution. The type of isomerism exhibited by the complex is,

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  3. Question 3

    24 Jan 2026 S1

    33
    Consider a mixture ' X ' which is made by dissolving 0.4 mol of [Co(NH3)5SO4]Br\left\lbrack Co\left( NH_{3} \right)_{5}SO_{4} \right\rbrack Br and 0.4 mol of [Co(NH3)5Br]SO4\left\lbrack Co\left( NH_{3} \right)_{5}Br \right\rbrack SO_{4} in water to make 4 L of solution. When 2 L of mixture ' X ' is allowed to react with excess of AgNO3AgNO_{3}, it forms precipitate ' Y '. The rest 2 L of mixture ' X ' reacts with excess BaCl2BaCl_{2} to form precipitate ' ZZ '. Which of the following statements is CORRECT.

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