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Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter21: Transition Metals And Coordination Chemistry

Section: Chapter Questions

Problem 2RQ

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Number answer choices: 5, 2, 0, 1, 4, 3, or 6

Sign answer choices: +, -, or no sign

Determine the formula for the most likely coordinate covalent
complex that would form between the following:
Lewis acid: Fe+
Lewis base: CI
What is the overall charge of the complex (number and sign)?
Number:
[ Select]
Sign:
[ Select]

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2. When a metal complex ion is formed in solution, what are the metal ion and ligands acting as? * O a) The ligand is a Lewis base, and the metal ion is its conjugate acid. O b) The metal ion is a Lewis acid, and the ligand is its conjugate base. c) The metal ion acts as a Lewis base, and the ligand acts as a Lewis acid d) The ligand is a Lewis base, and the metal ion is its conjugate acid.
Consider bis(ethylenediamine) copper(ii) complex ion, Cu(en)22+ : A ) Explain the bond formation in this ion in terms of lewis acid- base theory. B) Sketch the ion with some drgree of three- dimensional clarity. Indicate the structure of the ion.
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Calculate concentration of species in a solution containing a complex ion. In the presence of excess OH", the A1³+ (aq) ion forms a hydroxide complex ion, Al(OH)4. Calculate the concentration of free Al³+ ion when 1.97x10-2 mol AI(NO3)3(s) is added to 1.00 L of solution in which [OH- ] is held constant (buffered at pH 12.50). For Al(OH)4, Kf = 1.1x1033. [A1³+] = M
Kf for the complex ion Ag(NH3)2* is 1.5 x 10' at 25°C. Using this information, calculate the value of AG" for Ag(NH3)2*(aq). f
The dichromate ion Cr2 O722 and chromate ionCrO422 exist in equilibrium, like this:Cr2O722 (aq) 1 H2O ( l ) 2CrO422 (aq) 1 2H1 (aq)orange yellowa What would you see if you added dilute acid toa solution containing chromate ions?b How would you reverse the change?
Calculate concentration of species in a solution containing a complex ion. In the presence of excess OH, the Al³(ag) ion forms a hydroxide complex ion, Al(OH)4 Calculate the concentration of free Al³+ ion when 1.91x102 mol Al(CH3COO),(s) is added to 1.00 L of solution in which [OH] is held constant (buffered at pH 12.60). For AI(OH)4. K-1.1x1033 Check & Submit Answer Show Approach (A1)=[
Cobalt(II) complex ion solution: [Co(H2O)6]+2(aq) + 4Cl-(aq) [CoCl4]-2(aq) + 6H2O(l) Pink Blue 1). When silver nitrate is added the blue color becomes pink. Why is that ? 2. When heat is added , in which direction the equilibrium will shift ? Is this reaction exothermic or endothermic ? 3.What happens when the temperature is lowered in the ice bath ?
4) The formation of a complex ion occurs in several steps. Given the series of steps and equilibrium constants below, calculate the equilibrium constant for: A3+ (aq) + 2NH2 (aq) A(NH₂)2+ (aq) A3+(aq) + NHz (aq)=ANH22*(aq) K₁ = 200 ANHz2+(aq)+ NHz (aq)=A(NH2)z*(aq) Kz = 125
Calculate concentration of species in a solution containing a complex ion. In the presence of excess OH", the Al³+ (aq) ion forms a hydroxide complex ion, Al(OH)4. Calculate the concentration of free Al³+ ion when 1.20x10-2 mol AI(CH3COO) 3(S) is added to 1.00 L of solution in which [OH ] is held constant (buffered at pH 12.90). For Al(OH)4, Kf = 1.1x1033. [A1³+] = Check & Submit Answer Show Approach M
Although KOH, RÜOH, and CSOH have little association between metal and hydroxide in aqueous solution, Lit and Na+ do form complexes with OH : [LIOH(aq)] Lit + OH- = LIOH(aq) K1 [Li*][OH¯] = 0.83 [NAOH(aq)] Na+ + OH NaOH(aq) K1 = [Na+ ][OH¯] = 0.20 Prepare a table showing initial and final concentrations of Lit, OH¯, and LIOH(aq) in 1.00 F LIOH solution. Calculate the fraction of lithium in the form LİOH(aq) at equilibrium. fraction as LIOH(aq):

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