What would happen if u place the vinegar solution in the buret instead of Na OH? How would results be affected?
Q. - In an experiment with the purpose to find out the concentration of acetic acid in 3 different brands of vinegar
Asked by hello - Fri May 23 03:44:58 2008 - Chemistry - 3 Answers - Comments

A. lol we're not gonna do ur homework for you kid, just give up and take your F
Answered by bender - Fri May 23 03:47:03 2008

What should you do if you find air bubbles in the tip of your buret?
Q.
Asked by - Mon Oct 11 18:47:24 2010 - Chemistry - 1 Answers - Comments

A. drain it a bit, or try tapping the glass with your finger
Answered by - Mon Oct 11 18:49:06 2010

Why is it important to remove the air bubbles from a buret tip?
Q. ?
Asked by Gatorade234 - Thu Mar 25 19:06:17 2010 - Chemistry - 1 Answers - Comments

A. Air bubbles cause inacurate measurment of volume. When you're using a buret, the goal is to measure the volume of titrant as accurately as possible, misreading of titrant volume result in subsequent miscalculation of your analyt. The goal of any titration is to obtain both precise and accurate resluts. Misreading the volume will throw off your results by alot more than you would think. Air bubbles are nasty.
Answered by Undergrad - Thu Mar 25 19:14:29 2010

Why is it necessary to exclude any air bubbles in the buret, particulary in the tip, when it is filled with Na?
Q. OH Solution?
Asked by brianduff28 - Mon Dec 15 13:47:11 2008 - Chemistry - 1 Answers - Comments

A. the presence of air bubbles in the solution causes error in the volume of Na OH used.the obtained burette reading will be that including the air bubble.the exact volume might be different
Answered by goldie B - Mon Dec 15 13:57:14 2008

What is the most accurate method of volume measurement -- graduated cylinder, pipet, or buret?
Q. explain why?? also: How precisely could each of the following apparatus be read? (giver numbers and units for example, within 5 ml?) balance pipet cylinder buret
Asked by burpzalot862 - Tue Sep 11 13:34:38 2007 - Chemistry - 5 Answers - Comments

A. an ordinary graduated cylinder is definitely the least accurate some of the electronic pipets can dispense about a microliter or so very accurately. within .01 microliters. The glass ones have very high precision. I've attached a link to a some glass pipet that have tolerances of say 5 to 20 microliters. Burets. depends on the volume of course but a 10 ml buret may have a tolerance of 40 microliters. see link below. so for your first question, I'd say pipets are more precise than burets which are more precise than graduated cylinders part II balance. in the source, I've provided a link to one that reads to 0.0001 mg = 0.1 microgram pipets mettler toledo makes an electronic pipete and claims a precision of 1/1000 of full scale. I've… [cont.]
Answered by m w - Tue Sep 11 14:33:49 2007

How do you find the standard deviation and the percent error of a buret?
Q.
Asked by jess. - Mon Nov 21 15:49:01 2011 - Chemistry - 1 Answers - Comments

A. Normally, the uncertainty is equal to + or - the half of the smallest graduation.
Answered by - Fri Nov 25 14:37:50 2011

What was the reason for rinsing out the buret with Na OH solution before starting the titrations?
Q. I am doing a grade 12 chemistry lab, in which we are given the Molarity of Na OH, but not that of HCl, and acetic acid. We need to figure out both through titration experiments.
Asked by poloniusbog - Sun Mar 2 20:33:35 2008 - Chemistry - 1 Answers - Comments

A. the reason for rinsing out the buret with Na OH is to make sure only Na OH is in the buret. So rinsing it coats the buret with Na OH so when you add Na OH in titration you know for sure the exact molarity of your Na OH. It will not have been changed or diluted by what may have been in the buret before. When you titrate you can find the accurate molarity of HCl and HC2H3O2
Answered by angie - Sun Mar 2 20:43:31 2008

How do you use a pipette, buret and volumetric flask?
Q. how do you use these apparatuses? please answer in 5 steps. thank you.
Asked by Robert - Sat Aug 22 11:37:24 2009 - Chemistry - 1 Answers - Comments

A. 1. A pipette can accurately measure volumes of 0.1ul through to 5ml (or more depending on if you are in a lab where you need to measure larger volumes). But generally a pipette is used across all scientific disciplines. To use simply place a plastic tip at the bottom of the instrument, press down (using your thumb) and place the tip in the liquid, release your thumb slowly and the liquid is drawn into the plastic tip. To aspirate, simply push down on the pipette to the point of where resistance is met by the instrument and this releases the contents in the plastic tip into a designated tube. 2. A volumetric flask measures larger volumes, but is mainly used for the preparations of solutions (used in analytical chemistry). To weigh out the… [cont.]
Answered by doc-micro - Sat Aug 22 12:00:13 2009

How many drops from a 50ml buret would it take to have 1ml Na OH at normal pressure and at room temperature?
Q. I am writing a lab report and I am trying to wrap up my conclusion. Please use simplified vocabulary if possible!
Asked by - Fri Apr 22 21:26:50 2011 - Chemistry - 1 Answers - Comments

A. 2
Answered by - Fri Apr 22 21:28:20 2011

can someone explain why buret is used in titration?
Q. a long answer with principles and theories is needed.
Asked by conan - Wed Jan 13 23:37:29 2010 - Chemistry - 1 Answers - Comments

A. because titrations have to be very very precise. and with a buret you can deliver very small amounts of titrate at a time, and the volumes read are very acurate and precise
Answered by Baramanan - Wed Jan 13 23:45:48 2010

When is it best to use a graduated cylinder over a buret or pipet?
Q.
Asked by ohokay - Fri Sep 12 00:59:37 2008 - Chemistry - 2 Answers - Comments

A. buret is used in titration, pipet is used in transferring liquid reagents or chemicals, and graduated cylinder is used in measuring the volume of liquid and irregular shaped solid objects using displacement method. hope it helps!!
Answered by Virgilio - Fri Sep 12 02:07:08 2008

What's the effect on results if the tip of the buret was not completely filled with the solution?
Q. results = percent acidity & volume of the base consumed thank you for answering have a nice day
Asked by nightshift - Thu Sep 30 13:11:58 2010 - Chemistry - 1 Answers - Comments

A. You'll think you added more volume than what it actually took to reach the equivalence point. In other words, your calculated concentration will be higher than the true value. Cheers.
Answered by rhombohedral - Sun Oct 3 05:24:21 2010

why does pre-rinsing of the buret affect the accuracy of the data.?
Q. why is pre-rinsing of the buret really important for the data to be accurate.
Asked by Matt S - Sun Oct 14 20:31:48 2007 - Chemistry - 1 Answers - Comments

A. Whenever you wash a buret, you leave behind drops of water. Running a small amount of whatever solution you will use through the buret will remove these drops of water. Now any drops that remain are the solution that you are going to use anyway.
Answered by FrogChemist - Sun Oct 14 20:48:53 2007

Why the buret must be rinsed by Na OH or any kind of solution before starting titration?
Q. I'm doing a lab on acid-base titration. The very first procedure of this lab is to rinse the buret by Na OH before starting the titration. Is there a reason for doing this? Please be specific. Thanks !
Asked by Jenny - Sun Feb 8 04:00:19 2009 - Chemistry - 1 Answers - Comments

A. In any labs, you want to get the least error, correct? So if you washed the buret with distilled water, and then added your base (which I'm assuming you'd be using for titration), then wouldn't the Na OH be a little diluted? That would certainly add to your error. So then, instead of washing it out with distilled water or soapy solution or what not, you'd final wash it and coat the inside with a layer of a solution of Na OH, insuring the least diluted solution you could possibly get from whatever molar solution you're using.
Answered by machinegunmags - Sun Feb 8 04:08:05 2009

what happens to the rate of water flow as water leaves a buret?
Q. is it a positive slope or a negative slope?
Asked by bluegirl - Sun Feb 22 11:51:50 2009 - Chemistry - 1 Answers - Comments

A. Simple, the rate increases.
Answered by Jesus Christ on a stick! - Sun Feb 22 11:55:54 2009

Why is the initial volume reading 0.00 m L when a Buret is filled to its maximum capacity?
Q. Like why do the readings go downward instead of upward?
Asked by road1runner3 - Thu Sep 22 13:59:05 2011 - Chemistry - 1 Answers - Comments

I have a question about the meniscus of buret readings??
Q. Because the dark colour of the permanganate solution obscures the bottom of the meniscus, buret readings can be made using the TOP of the meniscus. Why is this okay? Why does this not affect the final results of the analysis?
Asked by shambhalachick - Mon Mar 17 19:11:49 2008 - Chemistry - 3 Answers - Comments

A. Well, it is not completely OK, it does introduce some errors, but there is not much we can do about this. Sometimes people try placing a strong lightbulb behind the biurette. Gervald is right, if you are calculating the difference between two readings, then you eliminate the error. However, if you have a single reading, then it's not OK.
Answered by sunshinegirl - Mon Mar 17 19:19:36 2008

What are the similarties and differemces between counting drops in a micro-scale experiment and using a buret?
Q. What are the similarties and differemces between counting drops in a micro-scale experiment and using a buret in a macro-scale experiment?
Asked by sablepeyton - Tue Mar 4 13:56:54 2008 - Chemistry - 1 Answers - Comments

A. Do you really think people are this smart on yahoo answers? Sorry I don't have a clue... I will have to ask my older sister.
Answered by In Case of Emergency Break Dance - Thu Mar 6 14:10:21 2008

How to use a buret for a lab?
Q. If we fill up a 50.0 m L buret up to 0.00 m L and want to find the molarity of something do we use the variable 0.00 or 50.0?
Asked by - Thu Apr 14 18:33:59 2011 - Chemistry - 3 Answers - Comments

A. You use 0.00 as the initial reading. When the titration has reached its endpoint, that reading will be the final reading. By subtracting the initial reading from the final reading, you will get the volume used. That's the volume you use in calculating the molarity of the unknown solution.
Answered by - Thu Apr 14 18:39:50 2011

How how in milliliters is a drop from pipette? Is a drop from a pipette the same as a drop from a buret?
Q. How how in milliliters is a drop from pipette? Is a drop from a pipette the same as a drop from a buret?
Asked by John - Fri Oct 3 01:34:20 2008 - Chemistry - 2 Answers - Comments

A. Yes they are the same...the size of the drop is controlled mainly by its surface tension. There are approx 20 drops in a m L...for water or dilute aqueous solns under normal conditions...so one drop is approx 0.05m L
Answered by L. A. L. - Fri Oct 3 01:43:45 2008