chem lecture 23

chem lecture 23 - General Analytical Chemistry II 1011-216...

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General & Analytical Chemistry II 1011-216 Winter 2008 Lecture 23
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General & Analytical Chemistry II Hydrogen Bonding • Hydrogen bonds form between a net-positive hydrogen and the loan pair on an electronegative atom in a neighboring molecule. • H-bonds can be thought of as weak Lewis acid- base interactions. 1-propanol
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General & Analytical Chemistry II H-Bond Examples N-H, O-H and F-H are the most common H-bond formers. The H-donor can be a different molecule than the electron pair donor (Lewis base). H-bonds are linear.
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General & Analytical Chemistry II H-Bonding in DNA
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General & Analytical Chemistry II Strength of H-Bonds H-bonds are stronger than bonds from dispersion or dipolar interactions.
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General & Analytical Chemistry II Water exhibits the strongest H-Bonds Tetrahedral O ice
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General & Analytical Chemistry II Phases of Matter The strength of intermolecular forces relative to 1.5RT determines the phase of matter.
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This note was uploaded on 03/18/2010 for the course COS 101121501 taught by Professor Langner during the Fall '08 term at RIT.

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chem lecture 23 - General Analytical Chemistry II 1011-216...

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