Number of salts among the following that do not give test of individual ions present in their solution.
Carnallite, CuSO₄·4NH₃·H₂O, Fe(CN)₂·4KCN , Potash Alum , Zeise's Salt, CoCl₃·6NH₃ , Mohr's Salt

Question

Number of salts among the following that do not give test of individual ions present in their solution.

Carnallite, CuSO₄·4NH₃·H₂O, Fe(CN)₂·4KCN , Potash Alum , Zeise's Salt, CoCl₃·6NH₃ , Mohr's Salt

TestHub · Accepted Answer

The total number of such salts is 4.

Complex salts retain their identity in solution and do not dissociate into their individual constituent ions, whereas double salts dissociate completely into simple ions.

Double salts (give tests for all ions):

Carnallite, Potash Alum, and Mohr's Salt.

Complex salts (do not give individual tests):

$C u S O_{4} \cdot 4 N H_{3} \cdot H_{2} O \to [C u (N H_{3})_{4}] S O_{4} \cdot H_{2} O$

$F e (CN)_{2} \cdot 4 K CN \to K_{4} [F e (CN)_{6}]$

Zeise's Salt:

$K [PtC l_{3} (C_{2} H_{4})]$

$C o C l_{3} \cdot 6 N H_{3} \to [C o (N H_{3})_{6}] C l_{3}$

Chemistry - Coordination Chemistry Question with Solution | TestHub

Doubts & Discussion