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To wash out any trace chemicals. These trace chemicals coul affect the titration result.
If the burette is clean ( from the lab. store), it will have been through the stores washing machine, so there may be trace solvents left behind.
What else can I help you with?
Why need to ensure no air bubbles when acids-base titration?
The buret is a device to preciseely measure volume while being able to deliver a varying amount of stuff. If youare assuming that the volume you have so accurately measured is of, say, hydrochloric acid, and then you end up with an air bubble (not hydrochloric acid) then the precise volume reading on the buret is inaccurate.
What are the limitations for titration?
Some limitations of titration include the need for precise and accurate measurements, the requirement for reactions to go to completion, potential interferences from impurities or other substances, and the necessity for proper calibration of equipment. Additionally, titration may not be suitable for reactions with slow kinetics or for samples with very low concentrations.
Why do you need to remove the funnel before carrying out the titration?
Removing the funnel before titration ensures that all the liquid being added comes into direct contact with the solution being titrated. This helps to ensure accurate measurements and avoids any potential contamination from the funnel.
Why does a cola soft drink need to be decarbonated to perform a phosphoric acid titration?
Decarbonating a cola soft drink is necessary before performing a phosphoric acid titration because the carbonation can interfere with the accuracy of the titration results. The carbon dioxide gas bubbles can affect the pH of the solution and make it difficult to accurately determine the endpoint of the titration. By removing the carbonation, the titration can be performed more reliably.
Why pilot reading is not required in red-ox titration?
Pilot reading is not required in redox titration because redox reactions are typically rapid and finish instantaneously at the equivalence point. This means that there is minimal scope for drift or variation in the readings, making it unnecessary to take a pilot reading before the actual titration.
Why it is necessary to cap the buret and minimize the CO 2 absorption from the NaOH solution. How will this affect your results?
When sodium hydroxide absorb carbon dioxide sodium carbonate is formed. But we need a defined mass (volume) of NaOH for a titration.
Do you need to rinse and drain sauerkraut before you cook it?
No.
Why need to ensure no air bubbles when acids-base titration?
The buret is a device to preciseely measure volume while being able to deliver a varying amount of stuff. If youare assuming that the volume you have so accurately measured is of, say, hydrochloric acid, and then you end up with an air bubble (not hydrochloric acid) then the precise volume reading on the buret is inaccurate.
What are the limitations for titration?
Some limitations of titration include the need for precise and accurate measurements, the requirement for reactions to go to completion, potential interferences from impurities or other substances, and the necessity for proper calibration of equipment. Additionally, titration may not be suitable for reactions with slow kinetics or for samples with very low concentrations.
Why do you need to remove the funnel before carrying out the titration?
Removing the funnel before titration ensures that all the liquid being added comes into direct contact with the solution being titrated. This helps to ensure accurate measurements and avoids any potential contamination from the funnel.
How does concentration affect a titration?
It is easier to answer this by using examples. Let us suppose we have 4g of NaOH in 100 mls of waste water (4%). Titrating with 1M HCl would require 100ml of titrant. That would thus mean we would need 1000ml of 0.1M HCl titrant run from a buret which is extremely impractical. The concentrations thus affect volumes and thus titration flask sizes etc. It also would affect the time taken and the practicality.
Why does a cola soft drink need to be decarbonated to perform a phosphoric acid titration?
Decarbonating a cola soft drink is necessary before performing a phosphoric acid titration because the carbonation can interfere with the accuracy of the titration results. The carbon dioxide gas bubbles can affect the pH of the solution and make it difficult to accurately determine the endpoint of the titration. By removing the carbonation, the titration can be performed more reliably.
Why the titration flask need to be shake during titration?
Shaking the titration flask during titration helps to ensure that the reaction mixture is well-mixed and that the titrant is evenly distributed throughout the solution. This promotes a more uniform reaction and more accurate measurement of the endpoint of the titration.
Why pilot reading is not required in red-ox titration?
Pilot reading is not required in redox titration because redox reactions are typically rapid and finish instantaneously at the equivalence point. This means that there is minimal scope for drift or variation in the readings, making it unnecessary to take a pilot reading before the actual titration.
Do figs need to be peeled before making preserves?
No, figs do not need to be peeled before making preserves. However, you do want to rinse the figs off before doing anything with them, just to make sure there's no dirt or pesticides on them.
Do you need to put anything in a Jello mold before you put in the gelatin?
You dont need to put anything in the mold, you just have to rinse it with warm water first.
What are the disadvantages of potentiometric titration?
Some disadvantages of potentiometric titration include the need for specialized equipment such as a pH meter or ion-selective electrode, which can be costly. Additionally, it may require a skilled operator to perform the titration accurately and interpret the results correctly. Potentiometric titration can also be slower compared to other titration methods.
