An aqueous solution of salt (P) gives white precipitate with barium chloride solution which is insoluble in dilute HCI and dilute HNO_(3). When ammonia (aq) is added to the aqueous solution of salt (P) blue precipitate is obtained which dissolves in excess ammonia producing deep blue colouration due to formation complex (Q). With KCN, (P) gives first a yellow precipitate which quickly decomposes to white precipitate along with liberating highly poisonous gas (R).(R) on hydrogenation produces (S) which gives yellowish orange coloured complex (T) with CoCI_(3). Which of the following options is correct with respect to P,Q,R,S and T?

An aqueous solution of salt (P) gives white precipitate with barium ch

1.	An aqueous solution of salt (P) gives white precipitate with barium chloride solution which is insoluble in dilute HCI and dilute HNO_(3). When ammonia (aq) is added to the aqueous solution of salt (P) blue precipitate is obtained which dissolves in excess ammonia producing deep blue colouration due to formation complex (Q). With KCN, (P) gives first a yellow precipitate which quickly decomposes to white precipitate along with liberating highly poisonous gas (R).(R) on hydrogenation produces (S) which gives yellowish orange coloured complex (T) with CoCI_(3). Which of the following options is correct with respect to P,Q,R,S and T?
Answer» P is `Ag_(2)SO_(4)'Q'` is `[Ag(NH_(3))_(2)]_(2)SO_(4)` S is a bidentate ligand and R is cyanogen R is `CH_(2)N_(2)` and P is `CuSO_($)` None of the above options is correct Solution :`P rarr CuSO_(4), Q rarr [Cu(NH_(3))_(4)] SO_(4), R rarr (CN)_(2)` `{:(S rarr,CH_(2)-NH_(2)),(,""\|),(,CH_(2)-NH_(2)):}` `T rarr[Co(en)_(3)]^(3+)` `Q rarr` Paramagnetic square planar `T rarr` Diamagnetic, octahedral