Error For Titrations
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Titration curve calculation Titration calculation Back titration Sample & titrant volume Volumetric glassware Volumetric glass cleaning Glassware calibration Standard substances Sources of errors Need more info? Inorganic Quantitative Analysis by Carroll Wardlaw Griffin Complete titrations sources of error list of books Titration » Titration errors There are several types of errors
Titration Error Calculation
that can make titration result differ from the reality. First, there is an intrinsic error of the method - end
Titration Error Of A Volumetric Analysis
point is not identical with equivalence point and color changes of indicators are not instant. Reasons of this difference are discussed in details in the end point detection and acid-base titration end
Percent Error Titration
point detection sections. In some cases excess of the titrant must be used as it is titrant color that signals end point. While this is also intrinsic characteristic of the method, it can be adjusted for by blind trials. Then, there are errors that can be connected with volumetric glass accuracy. These can be adjusted for by careful calibration of the glassware. If for some reason error in titration experiment calibration can't be done, we can minimalize errors using A class volumetric glass. We can also minimalize errors carefully selecting volumes of pipettes and burettes used. As it is discussed in the volumetric glassware and selection of sample size and titrant volume sections, using 50mL burettes and about 80-90% of their volume guarantees the smallest possible relative error of titration (it doesn't guarantee accuracy of the determination). Also using large (20 or 25mL) single volume pipettes means smaller relative errors. Finally, there are thousands of possible random errors, that can't be adjusted for. Some of them are typical human errors, that can be limited by sticking to lab procedures, but as long as there is a human operator involved, they will be never completely eliminated. Some of possible cases are: Misjudging the color of the indicator near the end point - this is probably the most common one. Not only color change is sometimes very delicate and slow, but different people have different sensitivity to colors. This is not the same as being color blind, although these things are related. Misreading the volume - at any moment, and due to whatever reason. This can be f
Help Suggestions Send Feedback Answers Home All Categories Arts & Humanities Beauty & Style Business & Finance Cars & Transportation Computers & Internet Consumer Electronics Dining Out Education & Reference Entertainment & Music Environment Family & Relationships Food & Drink Games & Recreation error in titration lab Health Home & Garden Local Businesses News & Events Pets Politics sources of error in titration curves & Government Pregnancy & Parenting Science & Mathematics Social Science Society & Culture Sports Travel Yahoo Products sources of error in titration of vinegar International Argentina Australia Brazil Canada France Germany India Indonesia Italy Malaysia Mexico New Zealand Philippines Quebec Singapore Taiwan Hong Kong Spain Thailand UK & Ireland Vietnam Espanol About http://www.titrations.info/titration-errors About Answers Community Guidelines Leaderboard Knowledge Partners Points & Levels Blog Safety Tips Science & Mathematics Chemistry Next What possible errors can occur during titration that would affect calculations? Follow 7 answers 7 Report Abuse Are you sure you want to delete this answer? Yes No Sorry, something has gone wrong. Trending Now Conor McGregor Bill Clinton https://answers.yahoo.com/question/?qid=20070117171226AA0VEfn Keanu Reeves Rachel Platten Cheap Airline Tickets Luxury SUV Deals Nikki Bella 2016 Cars Kenneth Bone Kelly Brook Answers Relevance Rating Newest Oldest Best Answer: Titration is a common laboratory method of quantitative/chemical analysis which can be used to determine the concentration of a known reactant. Because volume measurements play a key role in titration, it is also known as volumetric analysis. A reagent, called the titrant, of known concentration (a standard solution) and volume is used to react with a measured quantity of reactant (Analyte). Using a calibrated burette to add the titrant, it is possible to determine the exact amount that has been consumed when the endpoint is reached. The endpoint is the point at which the titration is stopped. This is classically a point at which the number of moles of titrant is equal to the number of moles of analyte, or some multiple thereof (as in di- or tri- protic acids). In the classic strong acid-strong base titration the endpoint of a titration is whe
Community Forums > Other Sciences > Chemistry > Dismiss Notice Join Physics Forums Today! The friendliest, high quality science and math community on the planet! Everyone who loves science is here! Thinking hard about errors in titration! Apr 7, 2005 #1 dagg3r hi guys assistance https://www.physicsforums.com/threads/thinking-hard-about-errors-in-titration.70362/ in this area would be great just see what i have written and comment on them please thanks! all. im thinking about the errors in titration from doing a typical acid-base titration to talk about in my experiment and these are the errors i came up with. First of all my class got a higher average titre required to titrate NaOH against citric acid so im thinking why my titre + concentration of citric acid is low. These are what error in i came up with. My experimental procedures were given 50ml of lemon juice, get 20ml into conical flask, dilute to 200ml with water, add ethanol near the end to get rid of bubbles, invert the solution 40 times. get 20ml aliquots from the dilute solution, titrate against NaOh and observe the end point turning to pink from the indicator. * citric acid liquid was lost to splashing before the end point was reached. * buret may have been contaminated with some error in titration other solution other than the one being tested. * reading of the buret may have been off. * distilled water remained in the buret before analysis * maybe did not get exact 20ml from the 50ml original My friends told me these notes below but i dont know what they mean someone care to explain: * bubble appeared during titration in the tip of the buret. " the buret contained NaOH so what bubbles are they talking about???/ what error is that?" * Titration nozzle was not flush with the mouth titration tube." no idea what they are talking here heh" So can some one read the experimental procedures and determine some errors / add to my existing one/ tell me if my errors are wrong :p and btw what does the inverting do????? and also how does it change ur results????? and lucky last question does adding too much ethanol do anything to the results thanks! dagg3r, Apr 7, 2005 Phys.org - latest science and technology news stories on Phys.org •New kind of supercapacitor made without carbon •How to measure individual platelets' strength •Was the secret spice in primal gene soup a thickener? Apr 7, 2005 #2 The Bob You could always have my personal favourite: 'Substance X was not actually substance X'. But back to stuff you will want to use: dagg3r said: * bubble appeared during titration in the tip of the buret. " the bure