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because it givs good readings
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∙ 15y ago
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What is a volumetric flask and its uses?
A volumetric flask is a piece of laboratory glassware used in analytical chemistry for the preparation of solutions. It is made of glass or plastic and consists of a flat bottomed bulb with a long neck, usually fitted with a stopper. The stopper is normally made in a chemically resistant plastic such as polypropylene rather than glass. The neck has a single ring graduation mark and a label. The label should show the nominal volume, tolerance, calibration temperature, class, relevant manufacturing standard and the manufacturer’s logo. The glass or plastic is generally clear but may be amber colored for handling light sensitive compounds such as silver nitrate or vitamin A.
Which is the best instrument to use to prepare a solution?
volumetric flask
When is it preferable to use a plastic volumetric flask?
The plastic flask is needed for trace analysis on analytes at ppb levels that might be lost by adsorption on the glass surface.
What is the different between conical flask and volumetric flask?
They both do something :)
How do you make 0.2 molar solution?
A 1 molar solution is a solution in which 1 mole of a compound is dissolved in a total volume of 1 litre. formula weight of glucose is 180.2 - measure 180.2 g of glucose into a graduated cylinder, then add water until the final volume is equal to 1 L If you dissolve 180.2g of glucose in a final volume of 1 litre, you have made a 1M glucose solution.
Which of the following is the best instrument to use to prepare a solution beaker test tube crucible volumetric flask NextReset?
The volumetric flask is the best.
What is a volumetric flask and its uses?
A volumetric flask is a piece of laboratory glassware used in analytical chemistry for the preparation of solutions. It is made of glass or plastic and consists of a flat bottomed bulb with a long neck, usually fitted with a stopper. The stopper is normally made in a chemically resistant plastic such as polypropylene rather than glass. The neck has a single ring graduation mark and a label. The label should show the nominal volume, tolerance, calibration temperature, class, relevant manufacturing standard and the manufacturer’s logo. The glass or plastic is generally clear but may be amber colored for handling light sensitive compounds such as silver nitrate or vitamin A.
Which is the best instrument to use to prepare a solution?
volumetric flask
How do you accurately measure volume of a liquid?
Use a volumetric flask.
To perform a reaction with small amounts of materials one should use a(n?
Graduated cylinders that are kind of red Volumetric Flask
Can insoluble solid particles be place directly on the volumetric flask?
It can but it's no use because in a volumetric flask are desired to obtain a pure solution with a well known concentration.
Could a 25 ml volumetric flask be replaced by a 25 ml pipette to measure the solution poured into a conical flask for titration?
As the pipette is far more accurate than a flask by a factor 10 to 100 one should NOT use a volumetric flask except for standard volumes over 100 ml.
When you use a volumetric conical flask and pipette explain the accuracy aspects of this equipment?
The accuracy of different types of pipettes and volumetric flasks is strictly specified by suitabe standards; also they are labelled.
When is it preferable to use a plastic volumetric flask?
The plastic flask is needed for trace analysis on analytes at ppb levels that might be lost by adsorption on the glass surface.
What is the different between conical flask and volumetric flask?
They both do something :)
What are the laboratory apparatus that use to measure mass and volume?
For measuring the mass (solids) of a substance you would need to use a balance. Measuring volume (liquids) a volumetric flask is required.
What units are used with a Erlenmeyer flask?
Well, look there. The image associated with your question actually SHOWS the answer.Erlenmeyer flasks are generally marked in units of mL. These should be taken as approximations at best; if you need an accurate amount, use a volumetric flask.
