what is Piston burette or Digital burette
1. what is Piston burette or Digital burette
A burette (also buret) is a laboratory equipment used in analytical chemistry for the dispensing of variable amount of a chemical solution and measuring that amount at the same time. ... Mainly, there are two types of burette which are volumetricburette and Piston burette or Digital burette.
2. When reading burettes, where should you base your measurement?
Answer:
When reading a burettes, remember to read it against a uniform background and to have the meniscus at eye-level. Also be sure to include uncertainty in any burettes reading. Always record burettes readings to two decimal places. If the bottom of the meniscus is at the 7.00 mL mark, record it as 7.00 mL not 7 mL.
Explanation:
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3. Directions: Read the statements below, write TRUE if it is correct and FALSE if it is incorrect. __________ 1. The burette should be washed before use and after use. __________ 2. The standard for burette cleaning is that the inner wall of the glass tube does not have water droplets. __________ 3. The burette must be fixed to the titration tube holder for use. __________ 4. When reading the burette, make the burette diagonal and the line of sight should be at the lowest point. __________ 5. During the titration, the eye should look at the change in color in the conical flask, but not the burette. __________ 6. Dropping speed: turn the stopcock and then immediately release the titrant. __________ 7. The last drop just makes a significant change in the color of the indicator and does not restore the original color within 0.5 min. The final volume is read and recorded. __________ 8. Air bubbles in the tip after loading the standard solution into the burette should be removed by vigorously shaking the burette. __________ 9. When performing the titration operation, the burette should be clamped on the titration tube holder. __________ 10. The burette should be inserted into the bottom of the receiving container to make the solution in the container rotate continuously clockwise.
Answer:
Truefalse truetruetruefalsetrue True truefalseExplanation:
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Explanation:
1.true
2.false
3.true
4.false
5.true
6.false
7.true
8.false
9.false
10.true
4. A student calibrated a burette according to Procedure B with the following data: Trial I Trial II Mass of empty bottle: 61.621 g 61.637 g Mass of Bottle & H2O: 82.824 g 83.572 g Water Temperature: 24 °C 24 °C Burette Volume: 21.26 cm3 21.99 cm3 If the density of water at 24 °C is 0.9973, what is the average correction value for the procedure?
Answer:
0.8765 god bless you and stay safe
5. _______1. Which of the following measuring tools that is NOT used to measure the volume of liquids .a. Buretts b. Erlenmeyer flask c. Graduated cylinder d. Florence flask
Answer:
D.
Explanation:
A Florence Flask/Boiling Flask is a type of flask used as an item of laboratory glassware. It is used as a container to hold liquids.
6. What is the difference between a base burette and an acid burette?
Answer:
A burette is a glass tube that has fine gradations and a stopcock at the bottom of it, and is typically used in a laboratory to accurately measure liquids, and to dispense them (hence the stopcock).
Explanation:
7. what are the differences of burette and pipette
Answer:
Burettes have a stopcock at the bottom while a pipette has a dropper like system that releases liquid in the desired amount by lessening the vacuum. ... As another important difference between burette and pipette, pipettes are more accurate in releasing liquid in smaller quantities than burettes.
Answer:
their spelling
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8. Which of the following is an instrument that is use to transfer a solution from one vessel to another? A. burette B. test tube C. stirring rod D. pipette
Answer:
D.pipette
Explanation:
hope lt helps
Answer:
D. pipette
Explanation:
9. A student who is standardizing the naoh solution fills the burette with the naoh solution but does not open the stopcock to fill the tip of the burette before starting the titration. will the naoh concentration determined from this titration be higher or lower than the actual concentration
Answer:
efer to Table 1 to identify the major basic ingredients contained in the antacid brands that were titrated. Write equations for the reactions of these three active ingredients with acid, H+.a.Gelusil:i.Al(OH)3+ 3 H+→ Al3++ 3 H2O ii.Mg(OH)2+ 2 H+ → Mg2++ 2 H2O b.Tums:i.CaCO3+ 2 H+→ Ca2++ H2O + CO2(g)3.A student who is standardizing the NaOH solution fills the buret with the NaOH solution but does not open the stopcock to fill the tip of the buret before starting the titration. Will the NaOH concentration determined from this titration be higher or lower than the actual concentration? Explain.a.The concentration will be lower than the actual concentration. It will be lower because the tip of the buret contributes to the concentration of the solution. The tip of the buret also must be filled in order to clean out the buret prior to titration. This is important so the solution is not contaminated with another a previous solution. It will also be lower because not as much NaOH is in the buret, which means less NaOH will go into titrating the solution. Finally, the reading of the buret will also be off because the tip of the buret is accounted for in the reading ofit, and if it is not filled, then the reading will be lower than one is reading on the buret.4.List possible sources of error in this experiment and for each, indicate whether the effect would be an erroneously high or low value for the neutralization capacity of the antacid.a.Part A: Standardization of NaOHi.A few of the steps in the procedure called for CO2free water to be added. If a student did not heat the water correctly, did not cover with a watchglass, or something else that would be a cause for CO2to be in the water still, it could throw the titration off slightly. Depending on the concentration of the CO2in the water, the titration results could vary slightly, or if there is a high concentration of carbon dioxide, it could have a large effect.
10. How many deical places should be recorded in burette?
Answer:
Two decimal places
Explanation:
always record buret readings to two decimal places. if the bottom of the meniscus is at the 7.00 ml mark, record it as 7.00 ml not 7 ml. when a solution is being dispensed from a buret grasp the stopcock in a manner that gives you control over the stopcock.
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11. burette how to measure it
Answer:
Burette reading
In order to measure the amount of solution added in or drained out, the burette must be observed at eye level straight to the bottom of the meniscus. The liquid in the burette should be completely free of bubbles to ensure accurate measurements.
12. What laboratory apparatus can be used in executing the decantation technique of separating the components of mixtures? a. Distilling flask b. Burette c. Separatory funnel d. Condenser
C.Separatory funnel thanks
13. which of the following laboratory apparatus is used to destroy the cell walls of harmful microorganism found in surgical instrument, glass and animal food? A. autoclave B. burette C. microscope D. pipette
Answer:
A. Autoclave
Explanation:
Autoclave is used mostly in medical and laboratory settings and this kind of apparatus is very important because it can sterilize lab equipment and waste. Autoclave sterilization works by using heat to kill microorganisms such as bacteria and spores.
14. 23 Identify the laboratory apparatus given. It is used t measure the mass of a substance. a. Burette b. Pipette c. Spring balance d Triple Beam balance24. One of the most important safety rules is to: a. avoid heating objects. b. read the procedure of the activity. c follow your classmates' directions. d. read the instructions and follow them carefully.help me pls huhu
in 23 is a next is b
Explanation:
easy thank me later
15. What laboratory apparatus used to take temperature of solids, liquids, and gas? a. Thermometer b. Burette Pipette C.
Answer:
A. ThermometerExplanation:
It is used to take temperature of solids, liquids, and gases.
16. 1) How will the computed concentration of the NaOH solution be affected (increase or decrease) if the acid burette is contaminated with a basic solution? 2) How about if there is air at the tip of the base burette before titration, what will happen to the computed concentration of the NaOH? 3) And lastly, what will happen if a small amount of the acid solution spilled while transferring it to the erlenmeyer flask?
The concentration of NaOH titrated is determined by the volume of the titrant (acid)
The computed concentration of the NaOH solution:
1. Will be decreased if the acid burette is contaminated with a basic solution 2. Will be increased if there is water at the tip of the base burette before titration 3. Will be increased if a small amount of the acidic solution is spilled while transferring it to the erlenmeyer flask Further explanationTitration is a procedure for determining the concentration of a solution (analyte) by reacting with another solution whose known concentration (usually a standard solution) is called the titrant. Determination of the endpoint / equivalence point of the reaction can use indicators according to the appropriate pH range
Titrations can be: acid-base titration, depositional titration, and redox titration. An acid-base titration is the principle of neutralization of acids and bases
For An acid-base titration there will be a change in the pH of the solution. If the titrant is alkaline the pH will rise, but if the titrant is acidic then the pH will drop
From this pH change a Titration Curve can be made which is a function of acid / base volume and pH of the solution
Acid-base titration formula
Ma Va. na = Mb. Vb. nbMa, Mb = acid base concentration
Va, Vb = acid base volume
na, nb = acid base valence
1. if the acid burette is contaminated with a basic solution, then the acid as the titrant reacts first with the base in the burette, so the concentration of the acid decreases. When used to titrate NaOH (strong base) it only requires a small volume of titration. Thus the concentration of NaOH becomes smaller than it should be
2. if there is water at the tip of the base burette before titration, causing the volume of the titration read in the burette will be more, so that the concentration of NaOH will be calculated greater
3. if a small amount of the acid solution is spilled while transferring it to the erlenmeyer flask, then the amount of acid used in the titration will read more in the burette, so that the concentration of NaOH will also be counted as well
Learn more
The concentration of the basic solution
https://brainly.ph/question/1241525
Acid and pH
https://brainly.ph/question/2313728
the pH of a 0.122 M monoprotic acid
https://brainly.ph/question/2524085
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17. A. Draw a Burette and label its parts.B. Diagram the Four Approaches of Biotechnology and give examples of each.
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18. Why is rinsing of the burettes both with distilled water and solution a critical step in titration?
Answer:
The scale on its side allows the amount of solution that's been allowed to flow out to be read off. As with the pipette, the burette should be rinsed with distilled water followed by the solution it is to be filled with to avoid contamination issues.
Explanation:
hope it helps
19. explain why meniscus curve of water in a burette is concave up, with the water higher along the walls in the water.
Answer:
A concave meniscus occurs when the particles of the liquid are more strongly attracted to the container (adhesion )than to each other (cohesion),causing the liquid to climb the walls of the container this occurs between water and glass.
20. Burette is a laboratory glassware used for:a. make interconnection in the assembly of laboratory apparatusb. filter particulate matter from a solutionc. measure the volume of solution dispensed in a titrationd. prepare an exact volume of solution
Answer:
The correct answer is d. prepare an exact volume of solution.
Let me explain something:
Laboratory glassware: In the routine of a chemistry laboratory, we come across a variety of glassware, each of which is important for a stage of the reactions that will be carried out.
One of them is the buret. The burette is a glassware with a cylindrical and narrow shape, with the purpose of dosing exact amounts of solutions. Along your body it is possible to observe graduations that help in this process.
From this it is possible to have control over the amount of liquid that will come out through the passage.
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________________________________________
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d. prepare an exact volume of solution________________________________________
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21. Assume that the burette is filled to the point indicated in the figure below. You would record the initial point as_________ml; the ending point would be________ml. Therefore, you would have dispensed _____________ml.
Answer:
Assume that the burette is filled to the point indicated in the figure at the left. You would record the initial point as 3.30 ml; the ending point would be 3.90 ml. Therefore, the titration would have required 0.60 ml. Remember that you should read the number that is at the bottom of the menisc
22. How will you properly handle pipette and burette?
Answer:
7 WAYS OF PROPER HANDLING A PIPETTE
1. Pre-Wet the pipette tip
2. Immerse the tip to the proper depth during aspiration
3. Pause consistently after aspiration
4. Use consistent plunger pressure and speed
5. Pull the pipette straight out
6. Examine the tip BEFORE dispensing a sample
7. Examine the tip AFTER dispensing a sample
23. 1. A titrand is the solution of known concentration which is taken in a burette2. A titrant is the solution of unknown concentration which is usually taken in a conical flask.TRUE OR FALSE
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1 true
2false
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24. 1.What are the proper ways in handling autoclave,balance,pipette and burette?
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Answer:
Use consistent plunger pressure and speed. Aspirate sample at a 90° angle and dispense at a 45° angle. These angles are optimal for ensuring all material is drawn up into, and expelled from, the tip. Reduce heat transfer by holding the pipette loosely and setting down when not in use
Explanation:
꧁IAMCAITY꧂25. 5. Why do you think is the reason why burette is made up of glass?
Answer:
To ensure that there will be no holes that will spill the contents inside
26. Which of the following applications would most likely utilize a burette as a measurement tool?
Answer:
Separating silver metal from liquid silver waste.
Explanation:
27. which does not belong to the group?a. graduated cylinderb. burettec. pipetted. crucible and cover
Answer:
D.crucible and cover
28. Why should the burette be in the analyte solution?
Answer:
You perform titrations to determine the concentration of a chemical in a sample. ... If the concentration of the titrant isn't what you think it is, then your results will be meaningless. Consequently, make sure the concentration of the titrant in the burette is exactly what you expect it to be.
Explanation:
hope it helps! good luck to your studies:>
29. A burette is graduated. what does this mean
Answer:
i dont know because im bubu you know that
30. Burette uses and discriptions
Answer:
Burette, also spelled Buret, laboratory apparatus used in quantitative chemical analysis to measure the volume of a liquid or a gas. It consists of a graduated glass tube with a stopcock (turning plug, or spigot) at one end.
