0
Why air bubble is removed burette get before carrying out tit-ration?
Wiki User
∙ 6y ago
If you leave an air bubble in the tip of the burette, you would artificially increase the titration volume needed. This would introduce an error into your calculations and would cause your results to be inaccurate.
Wiki User
∙ 10y ago
Wiki User
∙ 16y agothat is the scientific approach to any experiment and to get the precise readings in the conclusion it is important to see the minute observations
Wiki User
∙ 11y agoA pipette dispenses a known and accurate volume of material usually for titration. If air bubble were present, this would affect the volume and thus accuracy.
Add your answer:
Earn +20 pts
Which instrument is most often used to measure acid volume before a titration begins?
A volumetric flask is usually used; it is the most accurate instrument for liquid volume measure, and since titrations are highly quantitative, it's the best choice.
Why is it important to clean a burette?
It is important to remove the filter funnel before adjusting the level of the burette so as to prevent the residual drops of the reagent from dripping into the burette. Which can lead to inaccurate volume readings.
Why is it necessary to remove air bubbles from the buret?
because otherwise it gives you an incorrect reading. burette measurements are very precise, because you can easily see how many milliliters of substance you are pouring out - air bubbles will interfere with this exact calculation.
Why does the pH change rapidly at the equivalence point of a titration?
The equivalence point represents a region where the amount of acid to base (or base to acid) concentration is equal. Before the equivalence point there is a greater amount of acid (or base, depending on the titration). After the titration there is a greater amount of base (or acid). This reverse in dominance results in a dramatic change in pH.
What is The process of adding a known amount of solution of known concentration to determine the concentration of another solution is called?
titration is the best method to determine the unknown concentration of the unknown. if ur known is a solid then you would have to used distilled water to ensure it is submerged before you titrate.
Why do you need to remove the funnel before carrying out the titration?
chicken
What happens if the tip of the burette is not filled before the titration begins?
The measure of volume used in the titration will be inaccurate, because there will appear to be more titrate used than has actually been dispensed.
What is the trial titration?
A trial titration is carried out before the actual titrations and is not recorded. It is carried out by adding increments of several milliliters from the reactant in burette. It helps to give a rough estimation to the end point.
Why do you need to rinse your a buret before titration?
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.
Why is it necessary to rinse the burette with sodium hydroxide before you completely fill it up?
Before a burette is used, it needs to be cleaned. During the cleaning process, usually, water is introduced into the burette. Be the water clean or not, if the burette is then used without rinsing it with the solution that it is going to be filled with, the result of that analytical exercise will not be precise and accurate. The reason is that water residue in the burette would dillute the solution when it's filled in the burette which would make it impossible to determine the exact concentration of the solution moved by the burette. By rinsing and re-rinsing the burette several times with the solution it is going to be filled with, residue water from the cleaning process would be successfully removed from the burette as are other leftover substances from the cleaning process. This practice is quite important as basic analytical technique.
Which instrument is most often used to measure acid volume before a titration begins?
A volumetric flask is usually used; it is the most accurate instrument for liquid volume measure, and since titrations are highly quantitative, it's the best choice.
What are the limits for determination of chloride by the Mohr method?
1- done only in neutral medium. 2- all the cations which give insolublld be chromate must be absent or removed before titration. 3-titration of Ag+ with Cl- is not feasible. 4- not suitable for I- and SCN-
Why is the vinegar diluted before titration?
1. The advantage in diluting the solution before titration is that it allows for greater accuracy in the titration; this is because the color change in the solution is easier to observe if it is a dilute solution.
Why is it important to clean a burette?
It is important to remove the filter funnel before adjusting the level of the burette so as to prevent the residual drops of the reagent from dripping into the burette. Which can lead to inaccurate volume readings.
Why the solution is boiled before titration?
because in those cases, the endpoint will not be correct if the titration is carried out at low temperature
Where is the buffer region in a titration curve for the titration of a weak acid with a strong base?
It is the nearly horizontal region before the equivalence point.
Why oxalic acid is acidified before titration?
for medium produce
