Forensics Case 9 - Killer Cup of Coffee: Using colorimetry to determine concentration of a poison

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Points, Lines and Angles

Science: Chemistry: Stoichiometry and Mole

Science: Chemistry: Solutions

Science: Forensics: Data Analysis

Level

9-12

Activity Time

60 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Applications

Other Materials

Forensics: Connecting Science Investigations with TI Data Collection Activities

Vernier EasyLink™
Colorimeter
7 cuvettes
Colored wax pencils
Deionized or distilled water
50 mL of 0.15M ferrous thiocyanate solution
5 mL of ferrous thiocyanate solution with unknown concentration
Two 10 mL pipettes or graduated cylinders
Two 50 mL beakers
5 stirring rods
2 droppers
5 test tubes
Test tube rack
Lint-free tissues
Waste beaker
Goggles

Resource Types

Lessons

Data Collection

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Forensics Case 9 - Killer Cup of Coffee: Using colorimetry to determine concentration of a poison

Activity Overview

In this activity, students will use colorimetry to determine the concentration of a colored species in a solution and use a linear relationship to model Beer's law. They use Beer's law to determine the concentration of iron(III)thiocyanate (FeSCN²⁺) in an unknown solution.

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Lesson Files

Teacher Notes Appendix A PDF Teacher Notes Appendix B PDF Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Geometry: Points, Lines and Angles

Science: Chemistry: Stoichiometry and Mole

Science: Chemistry: Solutions

Science: Forensics: Data Analysis

Level

9-12

Activity Time

60 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Applications

Other Materials

Forensics: Connecting Science Investigations with TI Data Collection Activities

Vernier EasyLink™
Colorimeter
7 cuvettes
Colored wax pencils
Deionized or distilled water
50 mL of 0.15M ferrous thiocyanate solution
5 mL of ferrous thiocyanate solution with unknown concentration
Two 10 mL pipettes or graduated cylinders
Two 50 mL beakers
5 stirring rods
2 droppers
5 test tubes
Test tube rack
Lint-free tissues
Waste beaker
Goggles

Resource Types

Lessons

Data Collection

Report an Issue

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Forensics Case 9 - Killer Cup of Coffee: Using colorimetry to determine concentration of a poison

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Forensics Case 9 - Killer Cup of Coffee: Using colorimetry to determine concentration of a poison

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