Sublimation of Iodine | Exhibition chemistry | RSC Education
网页2012年12月31日 · Iodine is commonly found in schools, sublimes at accessible temperatures and has the advantage of being able to easily display the reverse phase transition: deposition.
13.12: Sublimation - Chemistry LibreTexts
网页The video below shows the sublimation and deposition of iodine. The beaker containing iodine is covered with a round-bottom flask that contains ice. When the iodine is heated it sublimes. When iodine vapors cool, deposition occurs. Deposition is the change of state from a gas to a solid.
Sublimation of iodine: Rise and fall of a misconception
网页Eventually, the iodine sublimes away, just like an ice cube in a freezer. In another application of the diagram, imagine starting slightly to the right of point 2, and raising the pressure, on a line rising vertically. Initially, the iodine is liquid, but will change to solid at some point.
12.5: Phase Diagrams - Chemistry LibreTexts
网页2023年9月26日 · This Youtube shows Iodine subliming at room temperature (an endothermic process absorbing energy), and then they place a cold surface above it, and demonstrate deposition as the vapor converts directly to a solid (an exothermic process).
Sublimation and deposition of Iodine - YouTube
网页2020年9月24日 · Iodine provides an excellent example of sublimation. When iodine sublimes it forms a visible purple gas. When the gas cools, it returns directly to the solid phase, an example of deposition....
Chemistry experiment 47 - Sublimation of Iodine - YouTube
网页At room temperature, elemental iodine is a black-bluish solid. When heated, solid iodine sublimates and enters the gas phase. Iodine got its name from the G...
11.6: Sublimation and Fusion - Chemistry LibreTexts
网页When solid iodine is warmed, the solid sublimes and a vivid purple vapor forms (Figure \(\PageIndex{6}\)). The reverse of sublimation is called deposition , a process in which gaseous substances condense directly into the solid state, bypassing the liquid state.
网页Procedure: Place 2 grams of Iodine in a 500 mL Erlenmeyer flask, and set a watch glass with ice over the mouth of the flask. Place the flask on a hot plate, and turn on the hot plate so the flask is heated slowly.
网页Iodine is commonly found in schools, sublimes at accessible temperatures and has the advantage of being able to easily display the reverse phase transition: deposition. Kit. Cold finger (can be either purchased or constructed) Gaffer tape. 100 cm3 conical flask. Iodine. Bunsen burner. Preparation.
Sublimation of iodine demonstration - YouTube
网页Declan Fleming shows us how the sublimation of iodine produces beautiful crystals - a demonstration that can support lessons on changes of state, particle th...