Question

Assertion (A): [Co(NH₃)₅SO₄]Cl gives a white precipitate with silver nitrate solution.

Reason (R): The complex dissociates to give Cl⁻ and \[\ce{SO^{2-}_4}\] ions.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

• Assertion (A) is true, but Reason (R) is false.

• Assertion (A) is false, but Reason (R) is true.

Answer 1

Assertion (A) is true, but Reason (R) is false.

Explanation:

[Co(NH₃)₅SO₄]Cl is a coordination chemical that contains a chloride ion (Cl⁻). When silver nitrate solution is added to it, the interaction of Ag⁺ ion with Cl⁻ ion produces a white precipitate of silver chloride (AgCl). The reason (R) given is incorrect because the complex dissociates to yield (Cl⁻) and \[\ce{SO^{2-}4}\] ions when dissolved in water, but not when silver nitrate is present.