Featured in PASCO’s College Chemistry Instructor Guide
College Instructor edition with 36 experiments covering introductory and general chemistry topics.
Use a colorimeter to learn how the factors of concentration and path length affect the absorbance of a colored solution.
Students learn how the factors of concentration and path length affect the absorbance of a colored solution.
Students gain experience conducting the following procedures:
- Diluting a copper (II) sulfate solution of known concentration in order to create five calibration standards.
- Creating a calibration curve of the absorbance of 660 nanometers of light versus the concentration of the five CuSO4 standards.
- Determining the concentration of a sixth copper(II) sulfate solution using the calibration curve and the equation of the slope of the best-fit line of the calibration curve.
Sensors / Equipment Used:
Our PASPORT Colorimeter records all 4 wavelengths simultaneously--no need to guess at wavelength to get a quality measurement.
Glass cuvette with cap
Beakers, 100-mL - 2
Test tubes, large - 6
Test tube rack
Graduated cylinder, 50-mL
Pipet with 10-mL
Glass stirring rod
0.40 M copper(II) sulfate (CuSO4) - 30 mL
Distilled water - 30 mL
Wash bottle with distilled water
The Associated Bundle:
Contains the probeware for completing experiments in the College Chemistry lab manual.