Chemistry Lab #4: Acid in Fruit Juices and Soft Drinks

ABOUT CHEMISTRY LAB:

Study how the concentration of acids in various consumer beverages may be determined by titration with sodium hydroxide. Students will determine the proper indicator to use in the titration of a weak acid. Students will create an experiment to calculate the molar concentration of acid in a beverage. Chemistry Lab #4: Acid in Fruit Juices and Soft Drinks kit contains enough materials for 15 groups of students as well as a Teacher’s Guide and Student Study Guide Copymasters. This lab meets Big Idea 1, Investigation 4, Primary Learning Objective 1.20.

Chemistry Kit includes:

10g Potassium Hydrogen Phthalate, 4 X
25g Sodium Hydroxide, 100mL Hydrochloric Acid, 0.1M
100mL Acetic Acid, 0.1M, 500mL Sodium Hydroxide, 0.1M,
25mL Phenolphthalein, 1%, 25mL Methyl Red, 0.02%,
25mL Bromothymol Blue, 0.04%,
1 pH Strips 1-14 Pkg/100.

All you need:

Buret, 50mL, Lab Stands with Clamps, 10mL Volumetric Pipettes, 25mL Volumetric Pipettes, Test Tubes, Test Tube Racks, Pipette Bulbs or Pi-Pumps, Various Erlenmeyer Flasks, Various Graduated Cylinders, Distilled or Deionized Water, Wash Bottles, Electronic Balance, 0.001g resolution or better (optional).