Q: Which of the following is the correct formula to calculate the volume delivered from a buret?

$$V = V_\text{final} - V_\text{initial}$$

Question 1

Which piece of laboratory equipment is most appropriate for delivering exactly 25.0 mL of a solution for a titration experiment?

Accepted Answer

25-mL pipet

Question 2

A student needs to prepare exactly 250.0 mL of a 0.100 M NaCl solution. Which piece of equipment should be used to ensure the most accurate final volume?

Accepted Answer

250-mL volumetric flask

Question 3

Which of the following statements about the 50-mL buret is correct?

Accepted Answer

It allows for the controlled delivery of variable volumes of liquid.

Question 4

A chemist needs to transfer 20.0 mL of a solution as accurately as possible. Which equipment should they use?

Accepted Answer

50-mL buret

Question 5

Which of the following best describes the function of the stopcock on a buret?

Accepted Answer

It controls the flow of liquid from the buret.

Question 6

A student uses a 100-mL graduated cylinder to measure 50.0 mL of water, but the measurement is not as precise as expected. What is the most likely reason?

Accepted Answer

Graduated cylinders are less precise than pipets or burets for measuring specific volumes.

Question 7

Which piece of equipment is calibrated to contain a specific volume rather than to deliver it?

Accepted Answer

250-mL volumetric flask

Question 8

During a titration, why is a buret preferred over a graduated cylinder for adding titrant to the analyte?

Accepted Answer

A buret allows for precise control and measurement of the volume delivered.

Question 9

A student needs to measure 25.0 mL of a solution as accurately as possible. Which equipment should they use and why?

Accepted Answer

25-mL pipet, because it is calibrated to deliver a fixed, precise volume.

Question 10

If a chemist needs to prepare a standard solution by dissolving a solid in water and diluting to a final volume, which piece of equipment should be used for the final dilution?

Accepted Answer

250-mL volumetric flask

Question 11

A student is asked to deliver exactly 10.0 mL of a solution. Which equipment would provide the least accurate measurement?

Accepted Answer

10-mL graduated cylinder

Question 12

Which of the following is the correct formula to calculate the volume delivered from a buret?

Accepted Answer

$$V = V_	ext{final} - V_	ext{initial}$$

Question 13

A student fills a 50-mL buret to the 0.00 mL mark and dispenses liquid until the level reads 23.45 mL. How much liquid was delivered?

Accepted Answer

$$23.45\ 	ext{mL}$$

Question 14

Which piece of equipment is best for preparing a solution of a known concentration by dilution?

Accepted Answer

250-mL volumetric flask

Question 15

A student is performing a titration and needs to add the titrant dropwise. Which equipment should be used?

Accepted Answer

50-mL buret

Question 16

Which of the following is NOT a correct use of the equipment shown?

Accepted Answer

Using a graduated cylinder to prepare a standard solution of exact volume

Common Types of Laboratory Equipment Used to Measure Liquid Volume

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