CHEM 162 Experiment #5: Spectrochemical Series.

CHEM 162 Experiment #5: Spectrochemical Series. Part A: Preparation of cis-Bis(glycinato)copper(II) monohydrate, Cu(gly)2 ·H2O g CuSO4 ·5H2O g g NH2CH2CO2H (glycine) g molar mass CuSO4 ·5H2O g/mole moles CuSO4 ·5H2O moles 1 pt molar mass NH2CH2CO2H (glycine) g/mole moles NH2CH2CO2H (glycine) moles 1 pt limiting reagent is 1 pt molar mass Cu(gly)2 ·H2O g/mole 1 pt (Note for molar mass: each glycine loses the acidic proton in order to be a bidentate ligand) g Cu(gly)2 ·H2O expected based on limiting reagent g 1 pt g Cu(gly)2 ·H2O recovered g % Yield % 2 pts Chem 162 Experiment #5: Spectrochemical Series Discuss your % yield. It is high or low? What are the contributing factors to this high or low % yield? (4 pts) Note: the molecular formula for the complex will give you information about the reaction stoichiometry for determining the limiting reagent. By signing below, you certify that you have not falsified data, that you have not plagiarized any part of this lab report, an d that all calculations and responses other than the reporting of raw data are your own independent work. Failure to sign this declaration will result in 5 points being deducted from your report score. Signature: Grading: 60 points total (Lab notebook pages are 10 points; Report is 50 points) This is an IN-LAB Report due before the end of the lab period. Record all of your data and observations in your lab notebook, then NEATLY transfer your results to the report sheet. 1 of 4 This study source was downloaded by from CourseH on :01:19 GMT -05:00 Name: Qz Section: Calculations for the rest of the report: Part B: Preparation and Measurement of lmax of Unidentate Cu(II) Ligands Cu(H2O)4 2+ kJ/mol CuCl4 2- kJ/mol Cu(NH3 )4 2+ kJ/mol Part C: Preparation and Measurement of lmax of Cu(II) Bi-dentate Ligands Cu(en)2 2+ kJ/mol Cu(dmg)2 kJ/mol Cu(ox)2 2- kJ/mol Cu(acac)2 kJ/mol Cu(gly)2 kJ/mol lmax (nm) lmax (m) DE lmax (nm) lmax (m) DE Based on the above copper(II) complexes, what is your spectrochemical series for these ligands in order of decreasing field strength? (4 pts) Based on the above copper(II) complexes, what is your spectrochemical series for these ligands in order of decreasing field strength? (4 pts)