What hooks do burbot like?September 22, 2022
Why should the burette be rinsed with NaOH before it is filled?September 22, 2022
This is because during rinsing some liquid will remain sticking to titration flask , therefore the pipetted volume taken is the titration flask will increase .
- 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.
- What could go wrong in a titration experiment? Several factors can cause errors in titration findings, including misreading volumes, mistaken concentration values or faulty technique. Care must be taken as the solution of the known concentration is introduced into a specific volume of the unknown through laboratory glassware such as a burette or pipette.
- Why is distilled water used in titration? The reason that distilled water is boiled prior to use in preparing titration solutions is to remove dissolved CO2 which is present in all water. CO2 gas dissolved in water forms small amounts of H2CO3, or carbonic acid. Carbonic acid will alter the pH of the water, making it slightly acidic.
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- Why removal of air bubbles is necessary before titration? Answer and Explanation: Good laboratory technique is critical when manually performing titrations. If you have air bubbles in the burette column, then the initial volume will have an error upon reading since part of that volume is occupied by the bubble rather than the titrant.
- 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.