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  • Carolina™ Investigations for AP* Chemistry: Evaluating Lemonade as a Buffer

Carolina™ Investigations for AP* Chemistry: Evaluating Lemonade as a Buffer

Item # 840600 Exclusive

Addresses AP Chemistry Big Idea 6 and Learning Objective 6.20. Students evaluate a buffer solution’s buffering capacity and compare the titration curves of a buffer solution and a weak acid. This comparative laboratory exercise can be taught using either a guided or an inquiry activity.

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$29.95

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Overview

Addresses AP Chemistry Big Idea 6 and Learning Objective 6.20. Students evaluate a buffer solution’s buffering capacity and compare the titration curves of a buffer solution and a weak acid. This comparative laboratory exercise can be taught using either a guided or an inquiry activity. In the guided activity, students measure the pH of a citric acid solution titrated with a strong base and plot the titration curve. Students repeat the procedure with a solution prepared from a commercial lemonade mix, which behaves as a buffer and whose primary ingredient is citric acid. Students compare the 2 titration curves, make observations, and address the differences in the curves.

The inquiry activity allows students to design a procedure to evaluate a commercial lemonade mix’s buffering capacity. It also provides an opportunity for students to present their experimental design and results, reinforcing the practice of communicating findings. Detailed preparation and procedure notes guide the teacher through leading a successful inquiry activity, including a suggested rubric for assessing student performance.

Both activities include Big Idea assessment questions that follow the AP Chemistry exam free-response question format. In the Big Idea assessment, students predict how changes in acid concentration and the acid-to-conjugate base ratio affect a titration curve’s shape. Students understand that changes in acid concentration and conjugate base increase a solution’s buffering capacity, while changes in the acid-to-conjugate base ratio determine a solution’s pH.

This kit provides the following AP Chemistry experiences: design a procedure to collect data, analyze data, make predictions about chemical changes, perform a titration, use a pH meter and a buret, and plot a titration curve. The use of a commercial lemonade mix as a buffer helps students make the connection between chemistry and their everyday lives.

   This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. For substitution suggestions, please call us at 800.334.5551 (8am to 8pm, ET, Monday-Friday).

  • This item is only available from Carolina Biological Supply Company.
  • This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses.
 

What's Included

Components Qty Included?
Lemonade drink mix Included
22 g citric acid Included
20 g Sodium citrate dihydrate Included
2 L 0.1 M Sodium hydroxide Included
Teacher’s Manual and Reproducible Student Guide Included
1 L distilled water Needed, Not included
50-mL graduated cylinder Needed, Not included
150-mL beakers Needed, Not included
250-mL beakers (or larger, to be used as waste containers) Needed, Not included
Stir plates Needed, Not included
Stir bars Needed, Not included
50-mL burets Needed, Not included
Ring stands Needed, Not included
Buret clamps Needed, Not included
Utility clamps Needed, Not included
Wash bottles (filled with distilled water) Needed, Not included
pH meters Needed, Not included

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AP Chemistry Labs

Carolina Investigations™ for AP* Chemistry: Kits That Support the New AP Curriculum

Carolina Investigations™ for AP* Chemistry Kits

If you are an AP teacher, you go out of your way to help your students perform successfully on the AP exam. Carolina Investigations for AP Chemistry Kits are specifically designed to help you do just that.

Carolina Investigations™ for AP* Chemistry Kits are designed to help AP teachers help their students achieve exceptional results by:

  • Facilitating the successful integration of inquiry-based learning into the laboratory experience
  • Using teacher-developed and field-tested activities that are designed for the AP classroom
  • Cultivating students’ conceptual understanding of the topics covered, while allowing them to draw upon real-world connections
  • Mirroring the free-response section of the AP Exam using assessment questions focused on the "Big Ideas"
  • Integrating mathematics and analytical thinking through the graphing and interpretation of student-collected data
  • Reinforcing knowledge by connecting concepts to students’ lives
  • Minimizing teacher prep and cleanup time

Carolina Biological Supply Company: Supporting AP for Over 25 Years

Carolina is proud to be the only supplier with unique kits and activities that are specifically designed for the new AP curriculum. We will also continue offering the traditional AP labs. In the end, whether you want to use one of our kits, follow a College Board lab, or design your own experiment, Carolina has the products and solutions you need.

Our staff continually works with real AP teachers to design, develop, and build products that meet AP teachers’ needs. We back all of our products with unparalleled support and our 100% Satisfaction Guarantee.

Let us help you help your students score a 5 on the AP Exam!



*AP is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, these products.

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