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Why would you use or not use an Erlenmeyer flask?
Erlenmeyer flasks are great for mixing chemicals since they have a wide base and can be swirled around without spillage. Since the base is wide, there is less danger of the liquid rising to the top and spilling out. The Erlenmeyer filter flask also has the advantage of avoiding tipping over.
What would you use an Erlenmeyer flask to do?
Erlenmeyers are used for a variety of purposes. They are used as distillation receiving containers, to hold different layers in an extraction, as reaction flasks, to heat solvent for crystallizations, as the crystallization flask, etc.
Why is an Erlenmeyer flask the best flask for a titration?
The unique shape of the Erlenmeyer flask, with it’s angled sides, and slim neck allow liquids to be mixed by swirling without risk of spiling the contents. This ability makes them suitable for titrations by positioning it below a burette. Erlenmeyer flasks can also be used to perform boiling reactions.
Are Erlenmeyer flasks accurate?
Erlenmeyer flasks and beakers are used for mixing, transporting, reacting, and filtration but not for accurate measurements. The volumes stamped on the sides are approximate and accurate to within about 5%.
What glassware are used for heating liquids?
Flasks are useful types of chemistry glassware for containing liquid and performing mixing, heating, cooling, precipitation, condensation, and other processes. These flasks –also known as a science flask, chemistry flask, or a laboratory flask (lab flask)– come in a range of sizes, materials, and uses.
Why should you titrate into an Erlenmeyer flask rather than into a beaker?
A conical flask is used in preference to a beaker because it is easier to swirl the mixture in a conical flask without spilling the contents.
Why is the Erlenmeyer flask more reliable than a beaker?
Flasks are normally the site of chemical reactions, for the reaction can take place in the large vessel and have low risk of spilling due to the long, narrow neck of the flask. Furthermore, flasks have the ability to be capped or corked, therefore solutions can be held for long periods of time without risk of spilling.
Can you put an Erlenmeyer flask on the stove?
If you have an electric stove that has coils embedded under a glass cook top, you are good to go. I have been using some flasks this way for years not worries. I do let it cool a little bit off the burner before dumping it ice cold water. Even the best labware tends to weaken with such an extreme swing in temp.
Can you microwave Erlenmeyer flask?
Using them in this way may well lead to cracking, fracturing or worse, and is unsafe. So, although Erlenmeyer flasks can be heated, they are not specifically designed for high temperature, constant heating applications. For this, you should use a boiling flask. Show activity on this post.
Can I use Erlenmeyer flask on the stove?
Can Erlenmeyer flasks be heated?
Beakers and Erlenmeyer flasks can be heated directly on a hot plate. These containers have a flat bottom and heat will be spread evenly throughout the solution when the solution is also stirred. Other containers that do not have a flat surface should be heated indirectly.
Is a beaker or Erlenmeyer flask more accurate?
The volumetric flask had the lowest percent error (0.3%), so it is the most accurate. The graduated cylinder and beaker were similar in percent error (2.2% and 3.5% respectively). Both were small, so they are fairly accurate. The flask had the highest percent error (17.4%), so it is the least accurate.
Why are Erlenmeyer flasks used instead of beakers when heating reaction mixtures?
Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated. Erlenmeyer flasks hold solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.
How would it affect your results if you used a wet Erlenmeyer flask instead of a dry one when transferring your acid solution from the volumetric pipette?
How would it affect your results if you used a wet Erlenmeyer flask instead of a dry one when transferring your acid solution from the volumetric pipette? – With a wet Erlenmeyer flask, the result will not be accurate. It might be contaminated by any type of liquid such as basic or acidic.
What is Fernbach flask used for?
Designed for mammalian suspension culture applications as well as bacterial and yeast culture. Fernbach flask shape increases surface area to volume ratio. The baffled bottom option improves mixing and aeration.
What are Erlenmeyer flasks?
Shake cultures are grown in special vessels, also known as Erlenmeyer flasks. In contrast to other lab vessels, shake flasks have a characteristic shape to allow a good shaking performance without spilling liquid. Learn more about differences in design and material and its influence on aeration. Image source: Kitch Bain/shutterstock.com
What is the advantage of baffling the bottom of the flask?
Fernbach flask shape increases surface area to volume ratio. The baffled bottom option improves mixing and aeration.
Why single use sterile disposable flasks?
When contamination matters, e.g. when handling sensitive cultures or production steps, single use sterile disposable flasks with 0,2 µm filter vented caps offer utmost convenience and safety. Different plastic materials are on the market depending on the application and on personal preference.