Chemistry - Coordination Chemistry Question with Solution | TestHub
An aqueous solution of salt (P) gives a white precipitate with Barium chloride solution, which is insoluble in dilute HCl and dilute HNO₃. When aqueous ammonia is added to the aqueous solution of salt (P), a blue precipitate is obtained, which dissolves in excess ammonia, producing a deep blue coloration due to the formation of complex (Q). With KCN, (P) first gives a yellow precipitate, which quickly decomposes to a white precipitate along with liberating a highly poisonous gas (R). (R) on hydrogenation produces (S), which gives a yellowish-orange colored complex (T) with CoCl₃.
Which of the following options regarding complex is not correct.
Options:
Answer:
Solution:
Complex (Q) is , which is paramagnetic (), square planar, and has a Van’t Hoff factor () of 2 (dissociates into 2 ions). Gas (R) is cyanogen , which hydrogenates to ethylenediamine (S); thus, Complex (T) is , which is diamagnetic ( low spin), octahedral, and has an of 4. Since statements (A), (B), and (C) are all scientifically accurate descriptions of these complexes, statement (D) is logically the "not correct" option.