To remove impurities from the burette, it is important to rinse it with distilled water. The burette must be rinsed with the titrant to eliminate any distilled water present, ensuring that the solution in the burette is not diluted.
Why is it necessary to remove bubbles from the tap and tip of the burette? If an air bubble exits the tip during a titration that volume of air will be registered as some of the volume of titrant that left the buret. This means that the volume of liquid delivered thru the tip will not be the amount calculated by subtracting the final buret reading from the initial buret reading.
Why should the burette be rinsed with NaOH before it is filled? Why do you need to rinse the burette with a base before you completely fill it with NaOH? The burette is designed to make precise volume measurements. The accuracy of a titration depends on precision. If any acidic chemical residue was in the burette, it would neutralize some of the NaOH you are using to measure with.
Why should the burette not be completely emptied? When you're cleaning your glassware, you use water to rinse it off. 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.
When rinsing a buret after cleaning it with soap water should the rinse? When rinsing a buret after cleaning it with soap and water, should the rinse be dispersed through the tip or the opening on the top? In preparing the buret for titration, the final rinse is with the NaOH titrant rather than the deionized water. Why? When rinsing a buret, the water and rinse should go through the tip.
Why is burette rinsed with distilled water? The burettes and pipettes are washed with distilled water before titration and not with tap water as tap water contains dissolved ions that may react with the analyte and the titrant to give unwanted products.