0
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.
lenpollock
Add your answer:
Earn +20 pts
Why do you need to remove the funnel before carrying out the titration?
chicken
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.
Why the titration process should be done drop by drop?
Around the expected equivalence point of the titration, you need to drop the solution very slowly and mix the solutions very well because, around the equivalence point, just one drop of solution from the buret can make a radical pH change in the mixed solution. If the color of the solution in the erlenmeyer flask changes, record the volume of the solution in the buret and add a few drops of the solution to make sure the the equivalence point you found is correct.
Why the titration flask need to be shake during titration?
so that the solutions mix properly
Need of blank titration?
to reduce error
Why do you need to remove the funnel before carrying out the titration?
chicken
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.
Why the titration process should be done drop by drop?
Around the expected equivalence point of the titration, you need to drop the solution very slowly and mix the solutions very well because, around the equivalence point, just one drop of solution from the buret can make a radical pH change in the mixed solution. If the color of the solution in the erlenmeyer flask changes, record the volume of the solution in the buret and add a few drops of the solution to make sure the the equivalence point you found is correct.
Why the titration flask need to be shake during titration?
so that the solutions mix properly
Need of blank titration?
to reduce error
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.
What is a titration and what equipment would you need?
A titration is a process of nutrilising an acid. You would need a burette, a beaker and and acidic and alkali substance. Higher chem FTW
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.
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.
How get the accutare titration value?
Titration value describes how accurately a substance is dissolved in another substance. In order to find this number, you need a pipette, a burette, and a volumetric flask.
