WorksheetsSpectrophotometry Zoom Meeting
Total questions: 8
Worksheet time: 8mins
What two variables will you be measuring during the spectrophotometry lab?
concentration and wavelength
wavelength and absorbance
absorbance and concentration
wavelength and transmittance
A purple Kool-Aid, which is dyed with true purple dye, would reflect ________ colored and absorb _____ colored light. (separate two answers with comma)
(a)
The absorbance values must fall between ___ and ___ on a calibration curve. (separate to answers with comma)
(a)
If you dilute 10.0 mL of a 15.0 ppm Kool-Aid sample to produce a 20.0 mL sample, the final solution will have a concentration of (a) ppm.
Briefly describe how a serial dilution is completed. (Include specific pieces of glassware that must be used)
During the spectrophotometry lab you will be measuring the absorbance at max. wavelength of (a) (number) Kool-Aid samples
The waste generated during this lab will go
in the liquid waste disposal
down the sink
back into the stock containers
The two standards analyzed during this lab are
Red 1 and Blue 40
Red 20 and Blue 1
Red 40 and Blue 2
Red 40 and Blue 1
