Lab #11: Rate Law of a Fading Dye Using Beer’s Law

Description

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.

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

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