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The plastic flask is needed for trace analysis on analytes at ppb levels that might be lost by adsorption on the glass surface.
Wiki User
∙ 11y ago
Wiki User
∙ 7y agoWhen a reagent can react with glass or dissolve glass.
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Which is the best instrument to use to prepare a solution?
volumetric flask
Why use a volumetric flask for molar solutions?
because it givs good readings
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.
What is the different between conical flask and volumetric flask?
They both do something :)
How do you prepare 250ml 15m solution of naco3 in a volumetric flask do presume a solvent ie h20 but then you have to presume volumes and conc and because 15M wanted you cant use the flask to dilute?
Did you mean 250 mL of 0.15 M Na2CO3? (It's impossible to make a 15 M Na2CO3 solution, as Na2CO3 is not that soluble.) Yes, you can assume that this will be an aqueous solution. Steps. 1. Calculate the mass of solid Na2CO3 needed. 2. Place this mass of Na2CO3 in the volumetric flask. 3. Add some water and swirl to dissolve the Na2CO3. 4. Carefully add more water until the total volume of solution is 250 mL, as indicated by the line etched on the neck of the volumetric flask. 250 mL x 1 L x 0.15 mol Na2CO3 x 105.99 g Na2CO3 = 4.0 g Na2CO3 needed ........... 1000 mL ......... 1 L ..................1 mol Na2CO3
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.
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.
Why use a volumetric flask for molar solutions?
because it givs good readings
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.
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.
What is the different between conical flask and volumetric flask?
They both do something :)
When can an Erlenmeyer flask be used instead of a beaker?
I my experience the Erlenmeyer flask is better for certain things than others.... what I mean is that is has labeled measurements on the side and the increments are based on the size of the flask but the volumetric flask is better is you want to dilute a solution at a certain volume to find....molarity they both have good qualities it just depends on what you want to use it for.
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.
