What is Erlenmeyer flask and its uses?
Mixing
What are characteristics of an Erlenmeyer flask?
Erlenmeyer flasks are recognizable from their basic characteristics: flat bottom, conical body, and long, cylindrical neck. They are named for German chemist Emil Erlenmeyer.
What is the purpose of swirling the flask?
The slanted sides and narrow neck of this flask allow the contents of the flask to be mixed by swirling, without risk of spillage, making them suitable for titrations by placing it under the buret and adding solvent and the indicator in the Erlenmeyer flask.
What is the function of a volumetric flask?
A volumetric flask is lab glass or plasticware used to prepare a solution. It is used to make up a solution to a known volume. Volumetric flasks are used to measure volumes much more precisely than beakers or Erlenmeyer flasks.
What’s the difference between a beaker and a flask?
Flasks are notable for their unique shape: a rounded vessel and a cylindrical neck. The main differing characteristic between a flask and a beaker is that beakers have straight sides, rather than slanted sides like a flask. Beakers are mainly for measuring and transporting liquids from one site to the next.
Why is an Erlenmeyer flask not accurate?
Beakers and Erlenmeyer flasks should not be used to measure volume unless you need only a very crude estimate because their accuracy for volume measurements is so poor. They can hold a much larger volume than any of the other types of glassware, however, which makes them useful for mixing solutions.
Why is a measuring cylinder better than a beaker?
Why is a graduated cylinder more accurate than a beaker? A graduated cylinder is used routinely for measuring volume and is considered more accurate than a beaker because of the permanently-marked incremental graduations incorporated in the clear cylinder.
Which is more accurate graduated cylinder or volumetric flask?
Graduated cylinders are generally more accurate and precise than laboratory flasks and beakers, but they should not be used to perform volumetric analysis; volumetric glassware, such as a volumetric flask or volumetric pipette, should be used, as it is even more accurate and precise.
How is a volumetric flask accurate?
The accuracy of the markings on volumetric glassware varies greatly. The markings on beakers and flasks are usually about plus or minus 5% of the volume of the container. Volumetric flasks, burets and pipets are the most accurate with tolerances of less than 0.2%.
Why is volumetric pipet more accurate?
volumetric pipet more accurate because its long size decreases error of misreading the meniscus and volumetric pipets are designed to measure specific volumes (such as 5ml). Also graduated cylinders are not calibrated during manufacture process.
Why do we use a volumetric flask Labster?
A volumetric flask is a standard piece of glassware in a chemistry lab. Its main purpose is to be used for creating solutions in with a high accuracy of the concentration. It often comes with a stopper for the top, which can be used to completely seal of the flask in connection with mixing the content.
Why do we use a volumetric flask quizlet?
A volumetric flask is used to measure precise liquids when you make a Molar solution.
What do you do if you add too much solvent when filling the volumetric flask to the mark?
If too much solvent is added, the solution must be discarded and a new solution should be prepared from the first step of the procedure.
Why is that the volumetric flask is the right choice here?
Why is it that the volumetric flask is the right choice here? It’s ideal for mixing different substances in. It has the precision we need.