Ligand X forms a complex with both cobalt and copper, each of which has a maximum absorbance at 510 nm and 645 nm, respectively. A 0.256 g sample containing cobalt and copper was dissolved and diluted to a volume of 100.0 mL. A solution containing ligand X was added to a 50.0 mL aliquot of the sample solution and diluted to a final volume of 100.0 mL. The measured absorbance of the unknown solution was 0.484 at 510 nm and 0.354 at 645 nm, when measured with a 1.00 cm cell. The molar absorptivities of the cobalt and copper complexes at each wavelength are shown in the table. Molar Absorptivity (e, M-¹cm-¹) Wavelength λ, nm 510 645 [Co²+] = What is the concentration of cobalt and copper in the final diluted solution? [Cu²+] = Co 36437 1241 wt% Co²+ = Cu 5526 17520 What is the weight percent of cobalt (FM = 58.933 g/mol) and copper (FM = 63.546 g/mol) in the 0.256 g sample? wt% Cu²+ == M M %

Ligand X forms a complex with both cobalt and copper, each of which has a maximum absorbance at 510 nm and 645 nm, respectively. A 0.256 g sample containing cobalt and copper was dissolved and diluted to a volume of 100.0 mL. A solution containing ligand X was added to a 50.0 mL aliquot of the sample solution and diluted to a final volume of 100.0 mL. The measured absorbance of the unknown solution was 0.484 at 510 nm and 0.354 at 645 nm, when measured with a 1.00 cm cell. The molar absorptivities of the cobalt and copper complexes at each wavelength are shown in the table. Molar Absorptivity (e, M-¹cm-¹) Wavelength λ, nm 510 645 [Co²+] = What is the concentration of cobalt and copper in the final diluted solution? [Cu²+] = Co 36437 1241 wt% Co²+ = Cu 5526 17520 What is the weight percent of cobalt (FM = 58.933 g/mol) and copper (FM = 63.546 g/mol) in the 0.256 g sample? wt% Cu²+ == M M %

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Which of the following is responsible for the chelate effect exhibited by multidentate ligands? Only one ΔGo > 0 ΔSo < 0 Formation of an octahedral complex ΔSo > 0 Formation of 1:1 Metal-Ligand complex ΔG < 0
The maximum absorption for the complex ion [Co(NH3)6]3+ is located at 470 nm. A)Predict the color of the complex and B) calculate the crystal field splitting inkJ/mol and cm-1.
Consider the solvatochromic complex, [Mo(bipy)(CO)4]. The complex has a MLCT peak in the UV-vis spectrum. This peak is at 533 nm in acetonitrile solvent and at 584 nm in benzene solvent. In a 50:50 acetonitrile:benzene mixture, the peak is at 559 nm. Is the mixture of acetonitrile and benzene immediately surrounding the [Mo(bipy)(CO)4] molecules less than, equal to, or greater than a 50:50 mixture (acetonitrile:benzene)? Justify your answer. (HINT: Do you need to convert the wavelengths to a more appropriate unit?)
The ligand bpy forms complexes with Ru³+ and Ru²+. The standard potential of the couple is +1.26 V. Does bpy bind preferentially to Ru³+ or Ru²+? Why? [Ru(bpy)3]³+/[Ru(bpy)3]²+ 3+
Take into consideration metal Z(III) ion which is able to form octahedral complexes with elther fluoride or cyanide ions, What can be said about the colors of the complexes formed when one complex ion absorbs at 650 nm while the other at 430 nm?
What electronic feature must a donor atom of a ligand have?
Why does orbital mixing result in pale coloured transition metal complexes? Use diagrams to explain your answer.
ose the false statement about isomerism in metal complexes. a) Enantiomers are non-superimposable mirror images, cis and trans isomers rotate the plane of polarization of plane-polarized light. c) it is possible for an octahedral coordination compound of formula M(NH3)5CIBr to have ionization isomers, aka coordination isomers. Linkage isomerism can occur in complexes with nitrite (NO2-) as a ligand. tion 14 ch of the following properties differ i
3) A transition metal complex ion with octahedral geometry has a value of 4.4 x 10+*J for the crystal field splitting, A.. What is the wavelength for the absorption maximum, Amar for this complex ion? a) 5.0 x 1015 m c) 524 mm b) 452 nm d) 637 nm
Mn(acac)3 was found to have its ground state to 1st excited state absorption at 500 nm (Δo). The pairing energy for this complex is 28,000 cm-1 . Based on this information, draw the populated ground state d orbital diagram for this complex.
A hypothetical metal M forms the following complexes with the generalized ligands X, Y, and Z: Complex ion Observed color [M(X)6]3+ green [M(Y)6]3+ blue [M(Z)6]3+ yellow Order these ligands according to their ability to split d orbitals. In other words, set up a spectrochemical series, from strongest to weakest ligand field strength. Rank from strongest to weakest ligand field strength. -X -Z -Y
Which statements are true regarding ligands? Select all that apply. Ligands donate all electrons involved in bonds they form with metal cations. Ligands are electron pair acceptors in coordination complexes. Ligands act as Lewis bases in coordination complexes. Ligands form ionic bonds with transition metals. All ligands with two lone pairs are bidentate. A ligand that can donate more than one electron pair to a metal cation is called a chelate. One ligand can donate only one lone pair to a metal cation.