Multiple Choice
Which of the following must always be used with volumetric or graduated pipettes?
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1. Chemical Measurements
Volumetric Analysis
Multiple Choice
Which piece of glassware is most accurate for analytically transferring exactly 10.00 mL of a solution?
A
A 10 mL beaker
B
A burette
C
A 10 mL graduated cylinder
D
A 10.00 mL volumetric pipette
Verified step by step guidance1
Understand the purpose of the question: The goal is to identify the most accurate piece of glassware for transferring exactly 10.00 mL of a solution. Accuracy refers to how close the measured volume is to the true value.
Review the characteristics of each piece of glassware: A 10 mL beaker is designed for approximate measurements and is not highly accurate. A burette is used for titrations and can deliver precise volumes, but it is not specifically calibrated for transferring exactly 10.00 mL. A 10 mL graduated cylinder provides moderate accuracy but is not as precise as a volumetric pipette. A 10.00 mL volumetric pipette is specifically calibrated to deliver exactly 10.00 mL with high accuracy.
Understand the calibration of a volumetric pipette: Volumetric pipettes are designed to transfer a single, fixed volume of liquid with high precision. They are calibrated to ensure the delivered volume matches the specified value (e.g., 10.00 mL) under standard conditions.
Consider the application: For analytical purposes, where precision and accuracy are critical, the volumetric pipette is the preferred choice because it minimizes errors in volume transfer.
Conclude the reasoning: Based on the characteristics and calibration of the glassware, the 10.00 mL volumetric pipette is the most accurate tool for transferring exactly 10.00 mL of a solution.
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