WHAT YOU’LL LEARN TO DO: Use titrations to calculate the concentration of citric acid in a soda; calculate the concentration of NaOH by titrating with a primary standard then use NaOH as a secondary standard to determine the acid content of Sprite
Please note:
- There are 2 separate assignments for this lab.
- Assignment 1: The lab handout that may be completed as a group (the same as for all labs to date).
- Assignment 2: This is an individual assignment that is designed to show your knowledge of the lab and course content. You will type a formal lab report. Please see the directions and rubric for more help.
Learning Objectives
By the end of this section, you will be able to:
- Calculate the concentration of a secondary standard through titration with a primary standard.
- Titrate a sample of carbonated soda with a standard solution to determine the concentration of acid in the beverage.
- Distinguish between endpoint and equivalence point with the addition of indicator to your sample.
LEARNING ACTIVITIES
The learning activities for this section include:
| Assignment | Approximate Time to Complete | Due Date |
| Read Introduction | 5 minutes | Before Lab |
|
Complete the Prelab Problems (Make sure you get this signed before you leave lab!) |
15 minutes | Before Lab |
| Complete Pre-lab Quiz Material will come from the lab introduction, safety, procedure, and the prelab questions. |
10 minutes | Before Lab |
|
Complete Formal Report (Rough Draft) (on Lab 7 – should be completed THROUGH procedure section). |
Varies | Before Lab |
| Complete Lab Handout | Varies | Due at the Next Lab Meeting |
| Complete Formal Report (Final Draft) | Varies | Due at the Next Lab Meeting |
*All students are expected to participate in the completion of the pre-lab assignment regardless of whether the assignment is an individual or group assignment.
*Pre-lab quizzes must be completed prior to coming to lab for a student to be admitted to class.