why is a burette used in titration
A buret is primarily used for titration to determine the concentration of an unknown solution by adding a solution of known concentration. Titration is a type of quantitative analysis and the most common forms are acid-base, precipitation, complexometric, and redox titrations.
Table of Contents Parts of a Burette How to Use a Burette Using a Burette in a Titration Troubleshooting How to Read a Burette Tips for Reading a Burette Reading the Burette in the Image Additional Tips How to Perform a Titration Parts of a Burette The burette is used to add a known volume of the blue solution to the flask. If the burette is not completely dry by the time you use it, the remaining traces of water on the inside will make your titrant more dilute and thereby change its concentration. Consequently, if you don't rinse your burette with titrant and there really is some water remaining inside, the titrant you dispense will be more dilute than it should be.Using A Burette. Step 1. Figure 4.9 4. 9: Step 1. A vertical stopcock means the buret is open and a horizontal stopcock means the buret is closed. A helpful tip: the direction of the stopcock follows the direction of the flow. Step 2. Figure 4.10 4. 10: Step 2. Rinse the burette and glassware with the titrant a few times to prevent contamination.
During a Titration, keep the liquid flowing normally until a few mL from the endpoint (the point at which the color changes). Around the endpoint, allow the liquid to flow drop-by-drop. After reaching the endpoint, rinse and dry the tip of the burette.