Kindly answer this question i & ii (i). The stepwise formation constants for aqueous coppercomplexes with NH2CH2CH2NH2 (en) are log K1 = 10.72 and log%3DK12 = 9.31. By comparing the values of K1 and K2 given in (a).,explain the difference between these copper complexes.(ii). Write the overall formation constant of these copper with encomplexes in (b). (i).

Two questions based on formation constants, which are to be accomlished.

(i). The stepwise formation constants for aqueous copper complexes with NH2CH2CH2NH2 (en) are log K1 = 10.72 and log K12 = 9.31. By comparing the values of K1 and K2 given in (a)., explain the difference between these copper complexes. (ii). Write the overall formation constant of these copper with en complexes in (b). (i).

(i). The stepwise formation constants for aqueous copper complexes with NH2CH2CH2NH2 (en) are log K1 = 10.72 and log K12 = 9.31. By comparing the values of K1 and K2 given in (a)., explain the difference between these copper complexes. (ii). Write the overall formation constant of these copper with en complexes in (b). (i).

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter14: Applications Of Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 14.22QAP: Mixing the chelating reagent B with Ni(II) forms the highly colored NiB22+, whose solutions obey...

See similar textbooks

Similar questions

Suggest a method by which Ni2+ can be precipitated homogeneously as NiS. a. Add sodium sulfste to the solution to precipitate NiSO4. Heat the nickel(II) sulfate to liberate O2 and yield pure NiS. b. The slow hydrolysis of thioacetamide can be used to generate a source of hydrogen sulfide gas, which provides the S²- to complex with the Ni2+. c. Add thiosulfuric acid to the solution to react with Ni2+ and precipitate NiS. d. Heat S8 in the presence of Ni2+, in an inert atmosphere, to produce NiS.
Please answer the following with complete solution. Thank you. A mixture placed in an Erlenmeyer flask comprises 6mL of silica gel and 40mL of a solvent containing, in solution, 100mg of a non-volatile compound. After stirring, the mixture was left to stand before a 10mL aliquot of the solution was extracted and evaporated to dryness. The residue weighed 12mg. Calculate the adsorption coefficient, K=CS/CM, of the compound in this experiment.
Mention 3 typical organic complexing agents in the environment and describe in which environments (in the widest sense) they are found and which elements are particularly taken up.
Is there a difference when the needle or metal clip is placed on the surface of distilled water with dilute amounts of liquid detergent? Explain your observations in terms of the strength of IMFA present in each condition.
A 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The analysis of metals was performed using complexation volumetry. Initially, an aliquot of 50.00 mL had its pH adjusted to 1.0 and titrated with a standard 0.03145 mol/L EDTA solution, requiring 6.95 mL to reach the end point. Subsequently, another 25.00 mL aliquot was buffered at pH=5 and titrated with the same EDTA solution, requiring 6.24 mL to reach the end point. Finally, a third aliquot of 25.00 mL was titrated at pH=11, requiring 11.10 mL of the same EDTA solution to complete the titration. Given the molar masses: Fe=55.845 g/mol; Al-26.982 g/mol and Sr-87.620 g/mol. a) Determine the percentage of each of the metals in the sample. b) Explain why the change in pH allows the determination of the three ions in this sample.
Discuss Quantitative aspects of Electrolysi/
How will the potentiometric titration curve of EmV over volume dichromate for the redox reaction of dichromate with Fe2+ differ from the same graph but using permanganate instead of dichromate?
300 cm3 of water is added to a solution of 200cm3 of 0.5 mol dm-3 sodium chloride. What is the concentration of the new solution, showing all working?
Explain why ionic attractions are weaker in media with high dielectric constants, e. g.,water and aqueous buffers.
A second calibration standard solution of an iron(III) salicylate complex was prepared in two steps. First, 10.0 mL of a 0.100 M stock solution was added to 90.0 mL of solvent to make 100.0 mL of the first calibration standard solution and, secondly, 80 mL of that first calibration solution plus 20.0 mL of solvent were mixed to make the second calibration standard. What is the concentration of the second calibration standard solution?
2. A sample of material contains for its active components NaOH, NazCO3, NaHCO3, or compatible mixtures of these. Two samples, each weighing 1.000 g, are dissolved in H20. To one sample phenolphthalein is added and the solution is titrated cold with 1.038 N acid, of which 17.96 mL is required. The other sample is titrated cold, with methyl orange as indicator, and 21.17 mL of the same acid is required. What alkalis are present, and what is the percentage of each in the original sample?
Explain the principles behind the colorimetric methods used in each electrolyte