This week’s lab is based on Beer’s Law and Absorption Spectroscopy. Students will evaluate the spectroscopic curve of solutions containing transition metals. Students will create a calibration curve of the Absorbance vs. Concentration for a series of standards and then use the calibration curve to calculate the concentration of a solution of unknown concentration.
Objectives: After completing this week’s assignments you will be able to:
- Determine the wavelength of maximum absorbance for copper solutions using a spectrophometer.
- Create a calibration curve using absorbance from a series of standards.
- Calculate the molarity of an unknown by using the equation of best-fit from your calibration curve.
| Assignment | Approximate Time to Complete | Due Date |
| Read over Lab Handout
*This MUST be printed and brought to class. |
15 minutes | Before Lab |
| View Prelab Video (Optional) | 30 minutes | Before Lab |
| Complete Prelab Quiz | 20 minutes | Before Lab |
| Complete Data and Obtain Signature | Completed In Class | In Class |
| Complete Postlab Quiz | 15 minutes | Before Next Lab Meeting |
*Prelab assignments must be completed prior to coming to lab for a student to be admitted to class.