Indicate which of the following common laboratory devices will deliver 25 mL of a solution with the greatest precision.

Question

Quizplus · Accepted Answer

A volumetric pipet is designed to deliver a specific volume (in this case, 25 mL) with very high precision, with a to deliver error of only 0.01 mL. The other options do not offer the same level of precision. The 50 mL Erlenmeyer flask and beaker are not designed for accurate volume measurement and have no volume divisions, making it difficult to assess exactly how much liquid has been added. The 50 mL graduated cylinder gives volume divisions every 2 mL, which is less precise than the volumetric pipet's 0.01 mL error. The 25 mL Erlenmeyer flask may be a good choice if it has volume divisions, but without additional information, it is not as precise as the volumetric pipet.

Indicate Which of the Following Common Laboratory Devices Will Deliver