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7.10.2: Lecture Demonstrations

  • Page ID
    50813
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    Sublimation of Non-Polar Iodine

    Add iodine crystals to a pre-heated 2 L Erlenmeyer flask on a hotplate and observe the sublimation and subsequent formation of beautiful crystals.

    Easy sublimation is due to lack of permanent charge. 

    Solubility of Polar vs. NonPolar Gases in Water

    An HCl fountain can be used[1][2][3][4] to demonstrate the high solubility of HCl in polar water. Compare to oxygen, nitrogen.

    References 

    1. Alyea, H.N.; Duton, F.B. "Tested Demonstrations in Chemistry", J. Chem. Educ., Easton, PA 1965, p. 13-14
    2. Ned Steadman. J. Chem. Educ., 1992, 69 (9), p 764 
    3. Nicholas C. Thomas and Stephen Faulk , Randy Sullivan J. Chem. Educ., 2008, 85 (8), p 1063
    4. J. Chem. Educ., 1995, 72 (9), p 828

    Contributors


    This page titled 7.10.2: Lecture Demonstrations is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Ed Vitz, John W. Moore, Justin Shorb, Xavier Prat-Resina, Tim Wendorff, & Adam Hahn.

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