Exam 4 p2 - page 2 4.17 Given that the KSp of ZnS is 10'22...

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Unformatted text preview: page 2 4. (.17 Given that the KSp of ZnS is 10'22 and the Kgp of CuS is 1044, what conditions would you use for preparation of the sulfides such that separation of the two ions (Zn2+ and Cu2+ ) is achieves? “7/9 4- H10 1: HS, + “30* ‘ Untied acidic vegan-U 20“}, + 1) HS — 4. H‘ o :3 g“ 4 {430* arr-«Llama élmigl +2: :54 ’ L . (admins mnc. 0g 9 ’- OV‘H Hne muff insoluble 9‘“ Gales “"Wla PfedPH-nfe , I‘n Ho‘s example Cu S 5. (a) (1} Write equations for the three steps involved in the dissolving of AgBr (s) (Ks: = 5.0 x 10—13) in 3.0M NH3 to give the complexion, [Ag(NH3)2]+ . * B .. . . .. ' ‘r k6? A%BQ5\/ 1'1» A3? Cm» .+ Br (.1?) A3899+ lilting)? AjQxil'th (4+) P141.) - + M. R3”? + NH; 5 AW”; + K, A3 (new). ' Ks Rem? ”r We :3 (b) (D What is the equilibrium constant for the overall process, given K1 and K2 for two of the steps? , H959" die "of Lands . . ’ \‘le ’9' - —‘ k: kspk ”\ka fl 0 ’0 . Jr _ / M or l‘icqfl 6. (a) (23 Draw geometrical isomers of [Co(C204)2(H20)2? 91’“ l .\\ {50mm 0 l ,o\ (“a l m t .. “L m -0 l Co H k A; “#7, t h g / A "' ‘9 l “J - u 5-.“ ”(’66) on A mirror d5 Fofal'e lSOG Z C wt 5 P“ ‘:£:ci-ufe A (b) (1) Are any of these isomers capable of optical isomerism? Explain. ‘ Le inl’cfml Minot f‘ane‘fi (or improper “+495.“ axes) Cannot be. easilj ruled cu‘i’ in a. 9—‘9 Xi‘awih?’ draw Hire. Mirror [Mfié and see {(7 if is “(atria/Wedgie 7. (a) Circle the ligands which are capable of linkage isomerism. an orijivtctG structure @, N3" , @, NHzCHzCHzNHz , @, 1' {Musl' Lave lav-e Pm‘rs w) wocdfaahmg— Q‘l'ln ‘6“: (lamina “+6“, “incl/l, {C We same; Mui‘l‘fitalf be. a! MM 1 ct «Nix ‘ - 8. (1) Based on electronegativuy differences between C , N , and F , rank the following igarids '7 fiom strong field to weak field. (Assume a correlation between Lewis basicity and ligand field strength.) _ _ - :CN’. >1I~XH3 >’; F- NH3 , CN , F " t . , ~ m ltd . J . r q V; . Le -.5 545.2. dad H6 M?” A? 7 TLC flrcuf'q' lei: elecVT—Mj (5 l3, HA6, umber iiie guns; ‘3; lad“ L13 Hne ”351M!- 9. (a) {3) Draw the d—orbital splitting diagrams for the octahedral complex ions of the following. / (a) FeZ+ (high spin) (b) Fe2+ (low spin) 4~ + Li unpaired, y”,- UMFKREJ .2 ledwn} 4i- 4— 4__ I“; 2% H7 aleLfT-MS ...
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