Indicate which of the following common laboratory devices will deliver 25 mL of a solution with the greatest precision.
A)a 50 mL Erlenmeyer flask (without volume divisions)
B)a 50 mL beaker (with volume divisions every 10 m
C)a 50 mL graduated cylinder (with volume divisions every 2 m
D)a 25 mL Erlenmeyer flask (without volume divisions)
E)a 25 mL volumetric pipette (with a to-deliver error of 0.01 mL at 25

Question

Indicate which of the following common laboratory devices will deliver 25 mL of a solution with the greatest precision.
A)a 50 mL Erlenmeyer flask (without volume divisions) 
B)a 50 mL beaker (with volume divisions every 10 m
C)a 50 mL graduated cylinder (with volume divisions every 2 m
D)a 25 mL Erlenmeyer flask (without volume divisions) 
E)a 25 mL volumetric pipette (with a to-deliver error of 0.01 mL at 25

Quizplus · Accepted Answer

The 25 mL volumetric pipette is the device that can deliver the desired volume with the greatest precision because it has the smallest volume divisions (to-deliver error of 0.01 mL) compared to the other devices. The other devices have larger volume divisions, which can lead to greater inaccuracies in measuring the volume.

Indicate Which of the Following Common Laboratory Devices Will Deliver