Multiple Choice
Which of the following best describes the primary purpose of a prelaboratory assignment in a volumetric analysis experiment?
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1. Chemical Measurements
Volumetric Analysis
Multiple Choice
Which of the following must always be used with volumetric or graduated pipettes?
A
A desiccator
B
A wash bottle
C
A burette clamp
D
A pipette bulb or pipette filler
Verified step by step guidance1
Understand the purpose of volumetric or graduated pipettes: These are precision instruments used to transfer specific volumes of liquid accurately in analytical chemistry experiments.
Recognize the importance of safety and accuracy: Pipettes require controlled suction to draw liquid into the pipette without contaminating the sample or risking exposure to hazardous chemicals.
Identify the tool used for suction: A pipette bulb or pipette filler is specifically designed to create suction, allowing liquid to be drawn into the pipette safely and precisely.
Explain why other options are not correct: A desiccator is used for drying substances, a wash bottle is used for rinsing, and a burette clamp is used for securing burettes. None of these are directly related to the operation of pipettes.
Conclude that a pipette bulb or pipette filler must always be used with volumetric or graduated pipettes to ensure safe and accurate handling of liquids.
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