What This Document Is
This document is a pre-lab exercise for Lab 3 in Survey of Chemistry II with Lab (CHEM 1152K) at Georgia Gwinnett College. It prepares students for an experiment focused on Thin Layer Chromatography (TLC), specifically applying the technique to separate components found in over-the-counter pain medications. The pre-lab includes true/false questions and a problem requiring completion of a chromatogram and calculation of Retention Factor (Rf) values.
Why This Document Matters
This pre-lab is essential for students enrolled in CHEM 1152K before attending Lab 3. Successful completion demonstrates a foundational understanding of TLC principles and prepares students to safely and effectively conduct the experiment. It ensures students are familiar with key terms like stationary phase, mobile phase, and Rf values before entering the lab environment.
Common Limitations or Challenges
This pre-lab exercise does not *perform* the TLC experiment. It assesses *readiness* for the experiment. Students will still need to apply these concepts in the lab setting, interpret results, and understand potential sources of error. This document does not provide detailed experimental procedures or safety protocols – those are covered in the lab manual and instructor guidance.
What This Document Provides
This pre-lab includes:
* Four true/false questions testing basic understanding of TLC terminology and safety.
* A scenario involving the separation of two components using TLC.
* An incomplete chromatogram that students must complete, including measurements and identification of components.
* The formula for calculating Retention Factor (Rf).
This preview does *not* include the answers to the questions, the completed chromatogram, or a detailed explanation of TLC procedures.
