Chem Exam III Notes 2

Chem Exam III Notes 2 - Chem Exam III Notes 2 5.7...

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Chem Exam III Notes 2 5.7 intermolecular forces of attraction are responsible for the condensation of gases into the liquid state and for the solidification of liquids to the solid state. In order of strength, the intermolecular forces of attraction are: 1. hydrogen bonds – a noncovalent force of attraction between the partial positive charge on a hydrogen atom bonded to an atom of high electronegativity, most commonly oxygen or nitrogen, and the partial negative charge on a nearby oxygen or nitrogen or flourine. DOES NOT WORK WITH CARBONS. 2. dipole-dipole attractions – the attraction between the positive end of a dipole of one molecule and the negative end of another dipole in the same or different molecule. Can occur between two identical polar molecules, 2 different polar molecules, or within the same molecule 3. London dispersion forces – extremely weak attractive forces between atoms or molecules caused by the electrostatic attraction between temporary induced dipoles. Only forces of
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This note was uploaded on 04/08/2011 for the course CHEM 153 taught by Professor Durham during the Fall '10 term at Saint Louis.

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Chem Exam III Notes 2 - Chem Exam III Notes 2 5.7...

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