Name Qz
: Number:
ID Section:
Lab Partner:
Chem 162 Experiment #5: Spectrochemical
Series
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.
Grading: 60 points total (Lab notebook pages are 10 points; Report is 50 points)
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:
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
Note: the molecular
formula for the complex
moles NH2CH2CO2H (glycine) moles 1 pt will give you information
about the reaction
stoichiometry for
limiting reagent is 1 pt determining the limiting
reagent.
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
Discuss your % yield. It is high or low? What are the contributing factors to this high or low % yield?
(4 pts)
1 of
, Name Qz
:Calculations for the rest of the report: Section:
Show calculation of max = 400. nm in meters. (3 Show calculation of E in kJ/mol for max= 400. nm. (5
pts) pts)
Part B: Preparation and Measurement of max of Unidentate Cu(II) Ligands
max (nm) max (m) E
Cu(H2O)4 2+
kJ/mol
CuCl4 2-
3 kJ/mol Cu(NH ) 2+
4
kJ/mol
Based on the above copper(II) complexes, what is your spectrochemical series for these
ligands in order of decreasing field strength? (4 pts)
Part C: Preparation and Measurement of max of Cu(II) Bi-dentate Ligands
max (nm) max (m) E
2+
Cu(en)2 kJ/mol
Cu(dmg) kJ/mol
2
Cu(ox)2 kJ/mol
2-
Cu(acac) kJ/mol
2
kJ/mol
Cu(gly)2
2 of
: Number:
ID Section:
Lab Partner:
Chem 162 Experiment #5: Spectrochemical
Series
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.
Grading: 60 points total (Lab notebook pages are 10 points; Report is 50 points)
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:
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
Note: the molecular
formula for the complex
moles NH2CH2CO2H (glycine) moles 1 pt will give you information
about the reaction
stoichiometry for
limiting reagent is 1 pt determining the limiting
reagent.
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
Discuss your % yield. It is high or low? What are the contributing factors to this high or low % yield?
(4 pts)
1 of
, Name Qz
:Calculations for the rest of the report: Section:
Show calculation of max = 400. nm in meters. (3 Show calculation of E in kJ/mol for max= 400. nm. (5
pts) pts)
Part B: Preparation and Measurement of max of Unidentate Cu(II) Ligands
max (nm) max (m) E
Cu(H2O)4 2+
kJ/mol
CuCl4 2-
3 kJ/mol Cu(NH ) 2+
4
kJ/mol
Based on the above copper(II) complexes, what is your spectrochemical series for these
ligands in order of decreasing field strength? (4 pts)
Part C: Preparation and Measurement of max of Cu(II) Bi-dentate Ligands
max (nm) max (m) E
2+
Cu(en)2 kJ/mol
Cu(dmg) kJ/mol
2
Cu(ox)2 kJ/mol
2-
Cu(acac) kJ/mol
2
kJ/mol
Cu(gly)2
2 of
