Assertion: [Co(NH3)5Br]SO4 gives white precipitate with barium chloride. Reason: The complex [Co(NH3)5Br]SO4 dissociates in the solution to give Br- and SO2-4.

Question

Assertion: [Co(NH3)5Br]SO4 gives white precipitate with barium chloride. Reason: The complex [Co(NH3)5Br]SO4 dissociates in the solution to give Br- and SO2-4. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false. (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

The complex [Co(NH3)5Br]SO4 dissociates to give [Co(NH3)5Br]2- and SO2-4 ions. SO2-4 ion reacts with barium chloride to give white ppt. of BaSO4. SO2-4 +BaCl2 → BaSO4+2Cl-

Q. Assertion: $[C o (N H_{3})_{5} B r] S O_{4}$ gives white precipitate with barium chloride.
Reason: The complex $[C o (N H_{3})_{5} B r] S O_{4}$ dissociates in the solution to give $B r^{-}$ and $S O_{4}^{2 -}$ .

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false.

If both assertion and reason are false.

The complex $[C o (N H_{3})_{5} B r] S O_{4}$ dissociates to give $[C o (N H_{3})_{5} B r]^{2 -}$ and $S O_{4}^{2 -}$ ions. $S O_{4}^{2 -}$ ion reacts with barium chloride to give white ppt. of $B a S O_{4}$ .
$S O_{4}^{2 -} + B a C l_{2} \to B a S O_{4} + 2 C l^{-}$

Q. Assertion: [Co(NH3​)5​Br]SO4​ gives white precipitate with barium chloride. Reason: The complex [Co(NH3​)5​Br]SO4​ dissociates in the solution to give Br− and SO42−​.