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- 1) Balance the following in acidic solution: (a) Н2О + Sn2+ Н,0 + Sn++ (b) PBO2 + Hg –→ H* + P²+ (c) Al + Cry0; – A+ + Cr+1. What mass of solid Lanthanum (III) oxalate nonahydrate { La2 ( C2O4 )3 ∙ 9 H2O } can be obtained from 650 mL of 0.0170 M aqueous solution of LaCl3 by adding a stoichiometric amount of sodium oxalate?Which of the following has LFSE O [Cr(H₂0)6]²+ O[Ni(H₂0)612+ [Fe(H₂O)6]²+ ([Co(H2O)%]2+ = -3/40?
- The electronic absorption spectrum of an acidic solution of [Ti(H,O),JP* exhibits two well-separated bands at 430 and 650 nm, respectively, assignable to "d-d transition. But the oxidized form [Ti(H,O),}³" shows only one absorption at 490 nm with a shoulder around 580 nm. Explain the observation. A. [Ti(H;O),J³* has more d electrons than [Ti(H;O).J**. B. [Ti(H,O),]³" is a strong oxidizing agent. C. [Ti(H,O),}³" shows stronger Jahn-Teller effect. D. [Ti(H,O)]" shows stronger Jahn-Teller effect. E. H,0 is a weak-field ligand.[Ni(en);)]2* has absorption bands at 893 nm and 545 nm. Calculate the energy of these transitions in cm unit.Give the name of the following compounds according to the latest IUPAC nomenclature. (a) NH4[Co(NO)2(NCS)4] (b) [TIC3(NM 3)3] (c) [Ru(CN)6]* (d) (Fel(OH2)s](NOs)2 (e) [(H2O)«FCo-CI-Co(OH2)s]** (10 marks) 2. (a) (i) Discuss the two ways of arranging the hexa-coordinated geometry
- What is the pH of a 0.05 M solution of CdSO4 if the KA value for [Cd(H2O)n] 2+ is 3x10-9 ? b. Write dissociation constant expression and predict pH (less or greater than 7) for Na2CO3 and CuCl2.Which of the following order is true with respect to the color/electronic spectra of[Fe(H2O)6]3+, KMnO4, [NiCl4]2-?(a) εKMnO4 > ε [Fe(H2O)6]3+ > ε [Ni(Cl)4]2-(b) ε KMnO4 > ε [Ni(Cl)4]2- > ε [Fe(H2O)6]3+(c) ε [Ni(Cl)4]2- > ε [Fe(H2O)6]3+ > εKMnO4(d) ε [Fe(H2O)6]3+ > ε [Ni(Cl)4]2- > εKMnO4(a) What is the systematic name of Na3[AlF6]?(b) What is the systematic name of [Co(en)2Cl2]NO3? (c) What is the formula of tetraamminebromochloroplatinum(IV) chloride?(d) What is the formula of hexaamminecobalt(III) tetrachloroferrate(III)?