QUESTION 34 Suggest an excitation source for obtaining an absorption spectrum of the red [Fe(SCN)2* complex. A. laser B. nichrome wire C. tungsten lamp D. globar E. flame
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Q: Ligand X forms a complex with both cobalt and copper, each of which has a maximum absorbance at 510…
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- With respect to the selection rules, transitions in [Cu(OH2)6]2+ are… a.Spin- and Laporte-allowed b.Spin- and Laporte-forbidden c.Spin-allowed only d.Laporte-allowed onlyChemistry With respect to the selection rules, transitions in [Cu(OH2)6]2+ are… a. Spin- and Laporte-allowed b. Spin- and Laporte-forbidden c. Spin-allowed only d. Laporte-allowed only.The absorption spectrum of [CrCI]+ shows a maximum around 667nm. a. Using CFT show the ground and excited states corresponding to this transition on splitted d- orbitals. b. What is the ground state term symbol for the metal ion? c. Using Tanabe-Sugano diagram determine the transition responsible for its absorption.
- With respect to the selection rules, transitions in [Cu(OH2)6]2+ are.. O a. spin-and Laporte-forbidden O b. Laporte-allowed only O c. Spin-allowed only O d. Spin- and Laporte-allowedLigand X forms a complex with both cobalt and copper, each of which has a maximum absorbance at 510 nm and 645 nm. respectively. A 0.243 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 0.503 at 510 nm and 0.368 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 (c. M-'cm-¹) Wavelength [Co² = A, nm [Cu²+] = 510 645 3.125 x10-5 Incorrect Co 2.867 x10-5 3.7630 x 10² What is the concentration of cobalt and copper in the final diluted solution? 1282 Cu 5707 18090 M MWhich of the following is TRUE regarding Zn(NH3)4²+? O a. Zn(NH3)42+ is colorless due to the filled 3d orbitals of Zn²+ 2+ O b. Zn(NH3)4²+ is colorless due to the high field splitting energy of the tetrahedral compound. O c. Replacing ammonia in Zn(NH3)4²+ with ethylenediamine changes the transmitted color of the solution closer to red. O d. Both A and C
- Which of the following statements is CORRECT? a. Zn(NH3)42+ has no color because of the filled 3d orbitals of Zn2+ b. Zn(NH3)42+ has no color because of the high field splitting energy of the tetrahedral compound. c. Replacing ammonia in Zn(NH3)42+ with en changes the transmitted color of the solution closer to red. d. A and CLigand 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 %For the complex [V(H2O)6]2+, the spectroscopic term of the ground state is: Select one: a. 3P b. 5D c. 4F d. 4P e. 4S
- When compared to that of the free thiourea, the vibrational frequency of carbon-sulfur bond in (Cu(tu)3]^+ complex is: 1 a. lower b. the same c. none of these d. higher If the molar susceptibility of the unpaired electrons of the polar complex Ni(PPH3)2C12 was found to be 3.4 x 10-3 c.g.s. at 25 C. Then the molecular geometry of this complex is: 2 a. Tetrahedral b. trans-Square planar c. trans-Octahedral d. cis-Square planar The complexes you prepared in optical isomerism experiment are: a. [Co(NH3)6]C13 and [Co(NH3)3(NO2)3] b. Cis- and trans-[Co(en)2C12]^+ c. (+)[Co(en)3]^3+ and (-)[Co(en)3]^3+ d. [Co(NH3)4CO3]NO3 and [Co(NH3)5CI]C12The complex [FeSCN]2+ has an absorptivity of 6.14 × 10-2 L/ (mg-cm) at a wavelength of 580 nm. The transmittance of a solution sample was measured in a 1.00 cm cell, and the percent transmittance %T was 46.9%. Calculate the concentration of the solution in ppm. concentration of the solution: 5.62 x10-7 ppm + Post a new auestion 14 étv hulu MacBook Pro $ へ & + 4 6. 7 8. 6. %3D R T Y U F G H K ...- IT(c) [Fe(CN3- cxhibits two sets of charge transfer absorptions in the visible and ultraviolet region but [FelCN)6]*- shows only one absorption in the ultraviolet region. Explain.
