IntermolForcePred

IntermolForcePred - the VP. In General: Nonpolar molecules...

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Intermolecular Force Prediction 1. Is the molecule polar or nonpolar? (Based on molecular geometries.) A. If the molecule is nonpolar, then it only has London Dispersion Forces (or just Dispersion Forces). B. If the molecule is polar, go to 2. 2. Does the polar molecule have any H-F, O-H, or N-H bonds? A. If no, the molecule has dipole-dipole forces. B. If yes, the molecule has hydrogen-bonding forces (or H-bonding). Strength of Intermolecular Forces: (from weakest to strongest) L.D. < D.-D. < H-Bonding Note: The stronger the intermolecular forces, the more likely the compound is a solid at room temperature. Predictions of Boiling Points (BPt), Melting Points (MPt), Water Solubilities, and Vapor Pressures (VP): The stronger the intermolecular forces, the higher the BPt, MPt, water solubility, but the lower
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Unformatted text preview: the VP. In General: Nonpolar molecules have low MPt, BPt, and water solubilities. They have high VP. Polar molecules have high MPt, BPt, and water solubilities. They have low VP. Polar molecules with H-bonding have the highest MPt, BPt, and water solubilities. They have lowest VP. Types of Solids Solid Type Type of Particle Forces or Bonds Holding Particles Together Properties Ionic (NaCl) Ions Ionic Bond High MPt, BPt, Water Solubility. Low VP. Covalent or Covalent Network (Diamond) Atoms Covalent Bonds Extremely high MPt, BPt. Low VP, water solubility. Molecular (sucrose) Molecules Intermolecular Low to Medium MPt, BPt, water solubility. High to medium VP. Metallic (Al) Atoms Metallic Bond Wide range....
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IntermolForcePred - the VP. In General: Nonpolar molecules...

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