1 / 9

Genie in a Bottle

Genie in a Bottle. A dense cloud of vapor emerges from a flask when a substance is added. Purpose. To produce and observe a cloud of water vapor forced through a narrow opening. Demonstration. The decomposition of hydrogen peroxide into oxygen gas and water was both rapid exothermic

devin
Télécharger la présentation

Genie in a Bottle

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Genie in a Bottle A dense cloud of vapor emerges from a flask when a substance is added

  2. Purpose • To produce and observe a cloud of water vapor forced through a narrow opening

  3. Demonstration • The decomposition of hydrogen peroxide into oxygen gas and water was both • rapid • exothermic • The water was vaporized as it was formed in the reaction • The vapor escaped as a dense cloud

  4. Concepts 1. Decomposition Reactions 2. Exothermic Reactions 3. Vapor

  5. 1. Decomposition Reactions • This reaction in this demonstration is the decomposition of hydrogen peroxide into oxygen gas and water • 2H2O2 2H2O + O2

  6. 2. Exothermic Reactions • This reaction is the decomposition of hydrogen peroxide into oxygen gas and water • 2H2O2 2H2O + O2 • The reaction is exothermic, that is it has a negative heat of reaction In this reaction enough heat is liberated that the water vaporizes

  7. 3. Vapor • Three states of matter • solid • liquid • gas • The gaseous state has its particles separated from each other • Vapor is a partially condensed gas • clusters of particles are present • clusters are visible to the eye

  8. Conclusion • Hydrogen peroxide decomposed to produce water, oxygen, and heat • The water coalesced into droplets in the form of a water vapor cloud

  9. Comments • The hydrogen peroxide used in this demonstration is 10 times more concentrated that the 3% hydrogen peroxide from a drugstore • Hydrogen peroxide is a powerful oxidizing agent and damaging to human tissue

More Related