111309a - LIQUIDS AND SOLIDS Zumdahl Chapter 10...

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Unformatted text preview: LIQUIDS AND SOLIDS Zumdahl Chapter 10 Intermolecular Forces y Rationale formation of liquids and solids indicates the presence of intermolecular forces Intermolecular Forces y Dipole-dipole 1 to 5 kJ/mol, attraction of partial positive charge to partial negative charge in polar molecules Intermolecular Forces Intermolecular Forces y Hydrogen Bonds ~10 kJ/mol; partial bonding of H with N, O or F. Attracted to the lone pairs on the highly electronegative atoms. H-F H-F H-F H-F O H H O H H O H H F H H H H O H Intermolecular Forces y Dispersive Forces instantaneous dipole formed by temporary induced fields due to fluctuations in charge distributions <1 kJ/mol y Polarizability ability of a substance to distort its charge distribution to induce a dipole moment when placed in an electric field Intermolecular Forces What type of IMFS are strongest in NH 3 ? D i s p e r s i o n D i p o l e D i p o l e H y d r o g e n B o n d s 4% 90% 6% 1. Dispersion 2. Dipole Dipole 3. Hydrogen Bonds What types of IMFs are strongest in N...
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This note was uploaded on 10/23/2010 for the course CHEM 105A taught by Professor Bau during the Fall '04 term at USC.

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111309a - LIQUIDS AND SOLIDS Zumdahl Chapter 10...

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