Question

2. Suppose you are given the following experimentally observed facts regarding the re- actions of silver ion. c. a. Agt reacts with Cl- to give white AgCl(s). b. Agreacts with ammonia to give a quite stable complex ion, Ag(NH3)2 A black suspension of solid silver oxide, Ag,0(s), shaken with NaCl solution, changes to white AgCl(s). d. AgCl(s) will dissolve when ammonia solution is added, but AgI(s) does not dis- solve under these conditions. Write equations for any net reactions in the cases above; then, based on these observa- tions, arrange each of the substances AgCl, Agl, Ag,0, and Ag(NH3)2* in such an order that their solutions with water would give a successively decreasing concentration of Agt. (1) (2) (3) (4)

Answer 1

soluation Net ionic equications are as follows we omit the spectator Pons - the ions that appear on both sides of the equcation- (a) Ag+ (aq) + cT (aq) Agel (s) + (b) Ag+ (aq) + 2NH3 Gar) » Ag (NH3) z] (aa) (c) Ag₂o(s) + 2 Nat (aq) + 2 claw) 2 Agcles ) + NQZO * In this reaction Nazo reacts with water (bez we taken nach soluation) and forms Naoth as Nazo + H₂O 2NaOH. (d) Ag Br and Agl are less soluble than Agol will go into soluation. in 15M NH₃, but Agr is so insoluble that it will not. : ABY

(e) Arranging in decreasing using concentration of Agt from top to bottom (8) Ag (NH3), (1) Ag20 (111) (u) AgI