IMF Report.docx - Keliiheleua 1 Ani Keliiheleua 10 March...

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Ani Keliiheleua10 March 2020Intermolecular ForcesIntermolecular forces (IMF’s) hold neighboring molecules together, however, they can bebroken with enough energy input. There are three IMF’s that this investigation is concerned with: London dispersion, dipole-dipole, and hydrogen bonds. These are ranked from weakest to strongest, respectively. London dispersion is found in every molecule and dipole-dipole is determined by the VESPR model which displays electron pair repulsion on the Lewis Structure itself. This creates a dipole making the molecule gain polarity. Hydrogen bonds are indicated by the presence of a hydrogen bonded to a fluorine, oxygen, or nitrogen. The attraction between molecules depends on both the type of bond, as well as the size of the molecule- or number of IMF’s. Molecules with more numerous or stronger IMF’s will require more energy input in the form of heat to overcome their attraction and undergo a phase change- in the case of this investigation, liquid to gas. The IMF’s present in a molecule can be determined by looking at the Lewis Structure model when observing the presence of a dipole or hydrogen bond. Understanding molecular structure can lead to predictions regarding evaporation rate, boiling

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Term
Spring
Professor
ArthurD
Tags
Intermolecular force

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