lecture15 - Lecture 15: Structure MCWeb philosophy MCWeb is...

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Unformatted text preview: Lecture 15: Structure MCWeb philosophy MCWeb is not a test. MCWeb is practicing material, a good way to learn about concepts. MCWeb was cancelled last Tuesday because of server problems, that does not mean that you shouldnt practice the hydrogen bonding questions Hydrogen bonding between molecules acceptor donor Acceptors: O, N, F Boiling points He: -268.93 Ne: -246.08 Kr: -153.22 Xe: -108.12 Boiling points Why does water have a higher boiling point than HF? O H H F H The H - F-H hydrogen bond is stronger than the H - O-H hydrogen bond. However, water has two hydrogen bond donor sites and two acceptor sites, while HF has only one of each. MC Web - Boiling points Choose the substance with the lowest boiling point. CH 3 OH CH 3 (CH 2 ) 3 CH 3 Xe 1. Determine the types of intermolecular forces in each substance. CH 3 OH MgCl 2 CH 3 (CH 2 ) 3 CH 3 Xe Van der Waals Van der Waals Van der Waals dipole- dipole ionic bonding MgCl 2 O H CH 3 H- bonding MC Web - Boiling points Choose the substance with the lowest boiling point.Choose the substance with the lowest boiling point....
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lecture15 - Lecture 15: Structure MCWeb philosophy MCWeb is...

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