Chemistry: Beer's Law Data Collection Lab

Objectives

• Students will make a serial dilution of a NiSO₄ standard solution.
• Students will use a Colorimeter to measure the absorbance value of each standard solution.
• Students will find the relationship between absorbance and concentration of a solution.
• Students will use the results of this experiment to determine the unknown concentration of another NiSO₄ solution.

Vocabulary

• Colorimeter
• transmittance
• absorbance
• slope
• y-intercept
• correlation coefficient

About the Lesson

This lesson involves absorbance data for solutions of various concentration.
As a result, students will:

• Become familiar with TI-Nspire^TM technology and the Vernier DataQuest^TM application.
• Use this graph to make conclusions about the experiment.
• Use a Colorimeter to make measurements.
• Analyze a graph of the data.

You may want to have students create a Lab Report using TI-Nspire following this lab activity. A sample lab report is provided in the downloads.