IS8111 AP® Chemistry Lab #11: Rate Law of the Fading of a Dye Using Beer’s Law


Students will determine the rate law for the reaction of crystal violet and sodium hydroxide. Students will also prepare dilutions of stock crystal violet solutions to generate a Beer’s law calibration curve. This lab will require students to integrate prior chemistry knowledge involving spectroscopy, Beer’s law, solution dilution, calibration curves, and chemical kinetics. The activity contains enough materials for 15 groups of students as well as a Teacher’s Guide and Student Study Guide Copymasters. Meets Big Idea 4, Investigation 11, Primary Learning Objective 4.2.

Kit Includes:
1500mL Crystal Violet, 1%
1500mL Sodium Hyroxide, 0.2M
1000mL Deionized Water

Materials needed but not supplied:
Pipet Bulbs
Spectrophotometers w/ Cuvettes
Stopwatches or Lab Timers

DOT Info:
UN1824, Sodium hydroxide solution, 8, II, Ltd Qty

WARNING: This product can expose you to chemicals including Crystal Violet, which is known to the State of California to cause cancer. For more information go to

SKU: IS8111 Category: