What is Condenser (apparatus)?
[[File:Toluene with sodium-benzophenone.jpg|thumb|right|250px|A condenser being used to do a [[reflux]]]] A '''condenser''' is a device used in the [[laboratory]] to cool hot [[gas]]es into [[liquid]]s. It is usually a long, circular [[glass]] tube. Inside the tube there is another, smaller tube. The hot gas goes through the smaller, inside tube, while in the outside one cold [[water]] goes around. Water can be put in from the tap, and goes from the bottom to exit at the top. This makes sure the tube is always full of water, so that cooling is quick. A condenser is used for example in [[distillation]], where the hot vapour needs to be cooled down back to liquid to be collected. It is also used in [[reflux]] where it makes sure that the [[solvent]] used does not boil and go away. {{LaboratoryEquipment}} [[Category:Laboratory equipment]]