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What is the procedure when the solution has drained from the pipette and the meniscus has reached the tip of the pipette?
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∙ 12y ago
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∙ 12y ago
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You are using a pipette that has a mark every 0.1 mL. If you want to measure 5.15 mL of liquid using this pipette to what level should you fill the pipette?
The bottom of the meniscus should be halfway between the 5.1-mL mark and the 5.2-mL mark
The pipette is not rinsed with the potassium hydrogenphthalate solution?
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Why is it important not to pipette a reagent solution directly from bottle of a reagent stock solution?
Contamination. Your stock solution has a known molarity and should not be contaminated with anything. Even a "clean" pipette tip. Its just good lab etiquette.
What is the crescent shaped surface of liquid that forms in pipette and graduated cylinders?
The crescent shaped surface of liquid that forms in pipettes and graduated cylinders is called a meniscus.
If you were asked to add 50 mL of a stock solution to a reaction vessel which piece of glassware would you use to obtain this volume of solution?
You can use a graduated cylinder or a pipette of 50 mL.
Why should you not blow out small amount of solution that remains in a pipette when measuring liquids?
It has been calibrated to include the small volume that remains in the tip after all the solution has drained
You are using a pipette that has a mark every 0.1 mL. If you want to measure 5.15 mL of liquid using this pipette to what level should you fill the pipette?
The bottom of the meniscus should be halfway between the 5.1-mL mark and the 5.2-mL mark
The pipette is not rinsed with the potassium hydrogenphthalate solution?
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How is a pipette prepared?
1. Clean the pipette with a solution of an adequate reactive. 2. Wash with tap water. 3. Wash with demineralized water. 4. Dry the pipette.
Why is it important not to pipette a reagent solution directly from bottle of a reagent stock solution?
Contamination. Your stock solution has a known molarity and should not be contaminated with anything. Even a "clean" pipette tip. Its just good lab etiquette.
What is a pipette bulb use for in chemistry?
A pipette bulb allow a liquid to be sucked up into the pipette, so avoiding having to use your mouth to suck the liquid up. Apart from avoiding often toxic liquids getting into your mouth, it also avoids contamination of the liquid.
What are the uses of measuring pipette?
it is used to measure specific ammounts of solution
Why a base is taken in pipette?
The purpose is to extract a known volume of solution.
What is the crescent shaped surface OF LIQUID THAT FORMS IS PIPETTE AND GRADUATED CYLINDERS?
The crescent shaped surface of liquid that forms in pipettes and graduated cylinders is called a meniscus.
What is the crescent shaped surface of the liquid that forms in pipette and graduated cylinders?
The crescent shaped surface of liquid that forms in pipettes and graduated cylinders is called a meniscus.
What is the crescent shaped surface of liquid that forms in pipette and graduated cylinders?
The crescent shaped surface of liquid that forms in pipettes and graduated cylinders is called a meniscus.
Why should you not blow out the small amount of solution that remains in pipette when measuring liquids?
The calibration of a pipette is made taking into account this small volume.
