ChemQuest® AP® Chemistry Lab #2: Beers Law - Mass Percent of Copper in Brass

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Product Number: SB52619

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Grades 10-12.

Allow students to get the most out of their AP® Chemistry class with college-level labs designed to challenge the more advanced student. Students will explore key concepts while preparing for higher education. Each activity contains enough materials for 15 lab groups as well as a teachers guide and student study guide copy-masters.

Students will design a laboratory procedure to analyze the amount of copper in brass using a spectrophotometer. Students identify the correlation among wavelength, absorbance, and concentration for each of three possible ions that may be obtained from brass: copper, zinc, and iron. Meets Big Idea 1, Investigation 2, and Primary Learning Objective 1.16.

Kit includes:

  • 50 ml cupric nitrate, 0.1M
  • 50 ml cupric sulfate, 0.1M
  • 50 ml ferric (III) nitrate, 0.1M
  • 50 ml ferric sulfate, 0.1M
  • 50 ml zinc nitrate, 0.1M
  • 50 ml zinc sulfate, 0.1M
  • 100 ml cupric nitrate, 0.4M
  • 100 ml nitric acid, 70%
  • 20 g brass pellets

Materials needed but not supplied:

  • 50 ml beakers
  • 50 ml graduated cylinders
  • Pipettes and pipette bulbs
  • 100 ml volumetric flask
  • Test tubes and test tube racks
  • Watch glasses
  • Wash bottle
  • 96-well reaction plates
  • Distilled water
  • Spectrophotometer with cuvettes
  • Electronic balance

Item Weight: 4.25
Age: 15 yrs. - 18 yrs.
Grade: 10 - 12
School Type: High School
Subject Areas: Chemistry
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