Chemistry - Salt Analysis Question with Solution | TestHub

Question Explanation :

Match reactions to their chemical properties.

Concept:

Qualitative analysis and coordination chemistry.

Solution:

(A) Fe(SCN)₃ + excess KF: Forms $[Fe{F}_6{]}^{3-}$. It is colorless and paramagnetic. The product is octahedral. → (S)

(B) CrO₂Cl₂ + NaOH: Produces yellow Na₂CrO₄ (colored). Cr(VI) is d⁰ (diamagnetic). → (P), (Q)

(C) Ni²⁺ + dmg: Forms a red precipitate (colored). The complex is square planar and diamagnetic. It features strong intramolecular hydrogen bonding. → (P), (Q), (R)

(D) $N{a}_{2}S{O}_3+C{r}_2{O}_7^{2-}$ + $H_{}^{+}$: Yields green $C{r}^{3+}$ (colored) and $S{O}_4^{2-}$ (diamagnetic). $Cr{O}_7^{2-}$ and $S{O}_4^{2-}$ are tetrahedral. → (P), (Q)

Final Answer: A–S; B–P, Q; C–P,Q,R; D–P,Q