What is round-bottomed flask?

A round-bottomed flask, also known as a Florence flask, is a type of glassware used in chemistry. It is named after Florence, the city in Italy where it was first created in the 19th century.

The flask has a round bottom and a long neck with a narrow opening at the top. The round bottom allows for even heating and stirring of liquid solutions, while the narrow neck prevents spillage and allows for the attachment of different types of laboratory apparatus.

Round-bottomed flasks are commonly used for chemical reactions that require heating or cooling, as they can be easily placed on a hot plate or in a water bath. They are also commonly used in distillation and reflux systems.

These flasks are typically made of borosilicate glass, which is resistant to thermal shock and chemical corrosion. They come in various sizes, ranging from a few milliliters to several liters, and can be fitted with various accessories such as stoppers, condensers, and thermometers.