SPE: Spectrophotometric Determination of Copper

Part A: Spectrum of Copper-Ammonia Complex

Wavelength (nm)	% T	Absorbance	Wavelength (nm)	% T	Absorbance
400			540
420			560
440			580
460			600
480			620
500			640
520			660

Wavelength with maximum absorbance (l _max):___________________

Part B: Preparation of Copper Standards

1. Copper Standard Concentration:______________________

2. Diluted Copper Standards:

Standard Number	1	2	3	4	5
Prepared by
Volume pipetted, mL
Concentration, M*
%T
Absorbance

*Show 1 calculation of diluted standard concentration: