Table of contents

1. Chemical Measurements1h 50m
2. Tools of the Trade1h 17m
3. Experimental Error1h 52m
4 & 5. Statistics, Quality Assurance and Calibration Methods1h 57m
6. Chemical Equilibrium3h 41m
7. Activity and the Systematic Treatment of Equilibrium1h 0m
8. Monoprotic Acid-Base Equilibria1h 53m
9. Polyprotic Acid-Base Equilibria2h 17m
10. Acid-Base Titrations2h 37m
11. EDTA Titrations1h 34m
12. Advanced Topics in Equilibrium1h 16m
13. Fundamentals of Electrochemistry2h 19m
14. Electrodes and Potentiometry41m
15. Redox Titrations1h 14m
16. Electroanalytical Techniques57m
17. Fundamentals of Spectrophotometry50m

1. Chemical Measurements

Volumetric Analysis

Analytical Chemistry

1. Chemical Measurements

Volumetric Analysis

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Multiple Choice

Which of the following must always be used with volumetric or graduated pipettes?

A desiccator

A wash bottle

A burette clamp

A pipette bulb or pipette filler

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Verified step by step guidance

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.