21. Sketch one reaction profile that is consistent with all three of the following statements: (a) The starting four-coordinate ML3X reactant complex is inert toward substitution by the ligand, Y. (b) The conversion of ML3X + Y to ML3Y +X is an exothermic process. (c) A five-coordinate ML3XY species is observed during the course of the reaction. etal present in I(CO)] 22. Draw out steps of a mechanism for the dissociative substitution of a CO ligand in Fe(CO)s by a PMe3 ligand to generate Fe(CO)4(PME3). a rule for the

21. Sketch one reaction profile that is consistent with all three of the following statements: (a) The starting four-coordinate ML3X reactant complex is inert toward substitution by the ligand, Y. (b) The conversion of ML3X + Y to ML3Y +X is an exothermic process. (c) A five-coordinate ML3XY species is observed during the course of the reaction. etal present in I(CO)] 22. Draw out steps of a mechanism for the dissociative substitution of a CO ligand in Fe(CO)s by a PMe3 ligand to generate Fe(CO)4(PME3). a rule for the

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter13: Kinetic Methods

Section: Chapter Questions

Problem 8P

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Consider a kinetics study of the following ligand substitution reaction: trans-[Rh(en)2Cl2] + + 2 Y−  trans-[Rh(en)2Y2] + + 2 Cl− When Y− = I−, Br−, and NO2 −, the reaction rate constants are 5.2 x 10-5 , 4.0 x 10-5 , and 4.2 x 10-5 M-1 s-1 , respectively. By which mechanism does this reaction most likely proceed? Justify your answer.
An acid solution of [Co(NH3)6]3+ replaces one amine ligand ~1013 times faster when radiated with UV-light than by boiling the acid solution. By referring to principles of this statement, compare thermal and photochemical activation of a chemical reaction.
If the Arrhenius constant is 2.4x106 and the activation energy is 56.7 kJ/mol, the rate constant of the reaction at 65 ºC is ........x10-3s-1 for the complex whose acid hydrolysis kinetics you have examined.
Ag+ + ligand L --> Ag_ligandL_Complex K_bind = ??? The virtual lab below contains a 1.00M flask of 'Ligand L' along with a bottle of solid silver chloride. Perform an experiment in the virtual lab to determine the binding constant for this ligand (K_bind for the above reaction). ou will need to use your knowldedge of solubility to determine tthe binding constant. The Ksp for Silver Chloride is: 1.830e-10. Agcl 0.971351 What is the binding constant for this ligand (Please use three significant figures for your answer)
If the Arrhenius constant is 2.4x106 and the activation energy is 56.7 kJ/mol for the complex whose acid hydrolysis kinetics you are examining, what is the rate constant of the reaction at 65 ºC?
draw the electronic configuration of platinium IIII in ormaplatine (complex and expect the followings: a. the charge of this drug b. the shape of its complex. c. the expected type of hybridization d. the number of coordination covalent bonds in this drug e. what is the pharmacological use of ormaplatinePlease explain the point (d) and how I can calculate it
Describe the types of metal complexation you would anticipate in first order streams. And why you chose these types of complexation?
You have been sent to India to investigate the occurence of goiter disease attributed to iodine deficency. As part of of your investigation, you must make field measurements of traces of Iodide(I-) in groundwater. The procedure is to oxidize I- to I2 and convert the I2 into an intensely colored complex with the dye brilliant green in the organic solvent toluene. a) A 3.15x10^-6 M solution of the colored complex exhibited an absorbance of 0.267 at 635nm in a 1.00cm cuvet. A blank solution made from distilled water in place of groundwater had an absorbance of 0.019. Find the molar absroptivity of the colored complex. b)The absorbance of an unknown solution prepared from ground water was 0.175. Find the concentration of the unknown.
calculat dlta E for each complex Trans complex : G= 355 microsiemens λ= 450 nm Cis complex : G=250 microsiemens λ=500 nm.
A nickel schiff base complex was formed following the synthesis below: nickel(II) acetate tetrahydrate + pyrrole-2-aldehyde was reacted with a solution of ethanol/water and refluxed at 65oC. 2M sodium hydroxide was added along with a solution of 1,3-diaminopropane in water. The solid formed was dissolved in dichloromethane and heptane was added to it. The dichloromethane was evaporated off and the product was vacuum filtered. What is the reaction mechanism for this reaction and what is the name of the end product formed? Draw the structure of the product formed.
The red color of soil is often due to the presence of iron. Metal ions are extracted from soil by stirring the soil in acid and then filtering the solution. One method for the analysis of Fe2+ is to form the highly colored Fe2+–thioglycolic acid complex. The complex absorbs strongly at 535 nm. Calibration standards of 1.00, 2.00, 3.00, 4.00, and 5.00 ppm are prepared by transferring appropriate amounts of a 10.0 ppm working solution of Fe2+ into separate 50-mL volumetric flasks, each of which contains 5 mL of thioglycolic acid, 2 mL of 20% w/v ammonium citrate, and 5 mL of 0.22 M NH3. After diluting to volume and mixing, the absorbances of the standards are measured. a)What is the effect on the reported concentration of iron in the sample if there is a trace impurity of Fe2+in the ammonium citrate?
The red color of soil is often due to the presence of iron. Metal ions are extracted from soil by stirring the soil in acid and then filtering the solution. One method for the analysis of Fe2+ is to form the highly colored Fe2+–thioglycolic acid complex. The complex absorbs strongly at 535 nm. Calibration standards of 1.00, 2.00, 3.00, 4.00, and 5.00 ppm are prepared by transferring appropriate amounts of a 10.0 ppm working solution of Fe2+ into separate 50-mL volumetric flasks, each of which contains 5 mL of thioglycolic acid, 2 mL of 20% w/v ammonium citrate, and 5 mL of 0.22 M NH3. After diluting to volume and mixing, the absorbances of the standards are measured. a)Use the data table below to prepare a calibration curve (absorbance versus concentration in ppm). Fit the data to straight line and find the equation for the straight line and the R2 value. (Hint: Think about what to do with the absorbance of the blank.)