errors and improvements in titrations
any help in this field anyone--- the coursework is analysis of lawnsand....
titrations in general.
thanks
titrations in general.
thanks
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limitations and improvements in a simpletitration experiment
Well, limitations could be accuracy of the burette / other equipment you're using, if you can't measure to many d.p., as well as knowing exactly when the turning point is- the fact that you have to do it by eye.
Improvements could be made by possibly doing it on a larger scale, thus making it more precise, using a balance that weighs to more d.p., putting the solution on a white tile to see the colour change...
Is that the kind of thing you were after?
Improvements could be made by possibly doing it on a larger scale, thus making it more precise, using a balance that weighs to more d.p., putting the solution on a white tile to see the colour change...
Is that the kind of thing you were after?
yeah the things mentioned above
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
emerley
yeah the things mentioned above
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
yes please
oh you might aswell add things like using higher grade equipment aswell, as this would reduce percentage error given that percentage error = set equipment error/volume (measurement)
emerley
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
-is your titrant clear? coloured titrants make it hard to read the scale
-adding it in drops as you near the end point
-reading the burette to the bottom/top of the meniscus - make it the same every time
-reading to correct decimal places?
- using volumetric pipettes for measurements
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
-is your titrant clear? coloured titrants make it hard to read the scale
-adding it in drops as you near the end point
-reading the burette to the bottom/top of the meniscus - make it the same every time
-reading to correct decimal places?
- using volumetric pipettes for measurements
TBH you should be doing most of these things before you even start thinking about limitations. Mentioning personal incompetence gets you no marks.
Errors/limitations should be things you have no control over, like accuracy of the burette and other measuring apparatus, as well as the fact that the endpoint is subjective.
Hi can send pdf of your coursework please and are you doing applied science extended certificate. I really need help!!!
Original post by emerley
yeah the things mentioned above
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
Original post by Science-n11
Hi can send pdf of your coursework please and are you doing applied science extended certificate. I really need help!!!
This thread is 11 years old...
Oh sorry I didn’t see it. Do you do applied science extended certificate
Original post by TODTEMPLE01
This thread is 11 years old...
Original post by Science-n11
Oh sorry I didn’t see it. Do you do applied science extended certificate
Nope sorry, doing a level
Do you know anyone who doing an applied science extended certificate
Original post by TODTEMPLE01
Nope sorry, doing a level
Original post by Science-n11
Do you know anyone who doing an applied science extended certificate
No
Original post by TODTEMPLE01
No
Original post by Science-n11
Do you know anyone who doing an applied science extended certificate
i currently am
Original post by emerley
yeah the things mentioned above
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
also things like...
- rinsing the burette with water, and then your titrant before using it (cleans it and makes sure theres no residual water)
- is your titrant clear? coloured titrants make it hard to read the scale
- adding it in drops as you near the end point
- is your titrant reacting or oxidising or anything in the tube? think about how you could stop it, or alternatively just do the experiment quickly
- reading the burette to the bottom/top of the meniscus - make it the same every time
- reading to correct decimal places?
- are you making sure all your solutions are well swirled before you use them - so nothing settles at the bottom?
- using volumetric pipettes for measurements
bla bla bla! i could dig my old coursework out if you need any more
YES PLEASEEE!!! Would be so much help!! x
I do first year l3
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