hi guys...well my dilemma is that i NEED TO WORK OUT THE PERCENTAGE ERRORS.....well , firstly the minimum error for a burette is 0.05 so, eg. (0.05/50mL x 100 = 0.1)...ok thats the begining...but i have also found somewhere that...
"when you use a burette you take a reading at the start and the end , so you have two errors of 0.05 cm3 i.e. total error = 0.10 cm3. If you are using your burette to do a titration there may be another error of one or two drops which is due to your judgement of when the indicator changes colour. This means that in a titration (as opposed to just using a burette to measure a volume) you may have an error of 0.2 cm3."
so...(0.2/watever measurement x100)...BUT..in my past courseworks..i divided (0.05/ measurement x 100)..and i REALLY DO NOT KNOW WHICH ONE IS RIGHT???
i dont know whether i shud do % errors for every repeated experiment i have dne for that 1 test??or just for one...i just dont know which error to USE 0.05 or 0.2 AARGH!!! PLZ HELP ME !!?
2007-04-14
09:52:31
·
4 answers
·
asked by
ang3lbluff
1
in
Chemistry