Exp. VII Beer's Law Overview

 

  Beer's Law Overview

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Overview

The purpose of this experiment is to investigate the interaction of light and matter, and to quantify the concentration of a chemical species in solution. The law that relates the amount of light absorbed by a solution to its concentration is called the Beer-Lambert Law, or simply Beer's Law. 

Computer display of absorbance spectra from dye solutions.

Learning Objectives

Upon successful completion of this lesson, students will be able to:

  • Develop the correct laboratory technique of spectrophotometry.
  • Prepare standard solutions from a stock solution.
  • Quantify the concentration of an unknown compound based on Beer’s Law from a calibration curve.
  • Write a full report including the sections of introduction, procedure, results, and discussion. 

Complete Before Lab

  READ

  • Overview
  • Lab manual  

  WATCH

  • Concepts video(s)
  • Technical skills video(s)

  SUBMIT

  • Pre-lab concepts quiz
  • Pre-lab technical skills quiz
  • Pre-lab notebook quiz and reflection

During Lab

  IN LAB ACTIVITY

  • Students work in pairs.
  • Complete the lab notebook

Complete After Lab

  SUBMIT

  • The lab notebook
  • The formal lab report
  • Post-lab quiz and reflection

   LOOKING AHEAD

  •  Next experiment

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