Introduction

In this section, Jared Hyman introduces himself as an assistant professor of chemistry at Elon University and explains that the video will focus on the proper titration technique using the complete single burette assembly kit from Carolina's biological supply company.

Proper Titration Technique

• A titration is used to quantitatively determine the concentration of an unknown solution by adding a known volume of a chemical called the titrant to mark the endpoint.

• Equipment needed for a titration includes a burette, ring stand, burette clamp, small funnel, Erlenmeyer flask, volumetric pipette and bulb, wash bottle with deionized water, beaker or flask of titrant and analyte, indicators selected for the reaction, reading card to read the meniscus, and white paper to visualize the endpoint.

• Rinse the burette thoroughly with deionized water and then with a small amount of titrant. Ensure that there is no liquid clinging to the walls of the burette.

• Mount the burette vertically in a clamp and fill it with titrant using a funnel. Tap gently to remove any air bubbles.

• Place an Erlenmeyer flask under the tip of the burette and allow a few milliliters of titrant to flow through to release trapped air. Rinse the tip with water and empty it into a waste container.

• Accurately read the volume on the burette by observing the concave meniscus at eye level. Record the volume to one additional decimal place beyond the smallest graduation.

• Use a volumetric pipette to transfer analyte to the flask and add indicator. Swirl gently and record this volume as well.

• Start titrating by opening up the stopcock and allowing quick addition of titrant while continuously swirling. Record final volume when color change occurs.

• To avoid passing the endpoint, slow down the addition of titrant when flashes of color appear in the analyte. Adjust the stopcock to a drop-wise rate and continue swirling.

• Close the stopcock when the indicator takes longer to fade. Rinse the burette tip and record final volume on the burette.

• Analyze if the analyte is faintly colored or colorless to determine if the endpoint has been reached.

Conclusion

The video concludes by emphasizing the importance of accurately reading volumes, adjusting titrant flow during titration, and recognizing the desired pale faintly colored endpoint.

The transcript provided does not include any additional sections or timestamps beyond this point.

Determining the Concentration of an Unknown Acid Solution

This section introduces the procedure for determining the concentration of an unknown acid solution using a base of known concentration. Carolina Chemistry offers a range of products and kits for chemistry labs.

Procedure for Determining Concentration

• The video starts with music, no relevant content is provided.

• Use a base of known concentration to titrate the unknown acid solution.

• Measure the volume of the base required to neutralize the acid solution.

• Calculate the concentration of the unknown acid solution using stoichiometry and molarity calculations.

• Carolina Chemistry provides all necessary products and kits for conducting this experiment in your chemistry lab.

Timestamps are not available for specific steps within this section.