Ch7 Worksheet

Ch7 Worksheet - the highest relative boiling point Fill in an arrow pointing in the direction of the highest boiling point Strongest IM force

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CH101/Ison Ch7 Worksheet Name: __________, __________ I. Polar vs. non-polar: 1. Polar molecules have at least 1 polar bond or 1 lone pair 2. The polar bonds or lone pairs must be arranged in space so that the dipoles don’t cancel out. 3. C-H bonds are considered non-polar C O O B F F F C S O O O H H O H H N H H H C H H Cl Cl C Cl Cl Cl Cl C C C C C C H H F H F H C C C C C C F H F H F H B Cl F F C C C C C C F H H F H H
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CH101/Ison Ch7 Worksheet Name: __________, __________ II. Intermolecular forces: Name What types of molecules Trend Example molecule (draw interaction) STRONGEST WEAKEST Practice problems: 1. Draw a hydrogen-bonding interaction between two molecules of HF. 2. What’s stronger, an H-bond or O-H covalent bond in water? Why?
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CH101/Ison Ch7 Worksheet Name: __________, __________ III. Boiling point trends: Boiling requires that the intermolecular forces between molecules are broken as liquid turns into gas. Determine which of the following three IM forces will result in
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Unformatted text preview: the highest relative boiling point. Fill in an arrow pointing in the direction of the highest boiling point. Strongest IM force present Relative boiling point H-bonding Dipole-dipole dispersion Practice problems: Fill in the table below: Substances List all IM forces for each molecule. Which molecule has the higher BP and which IM force is responsible. 1. PCl 3 BF 3 2. CH 3-NH 2 CH 3-F 3. H 2 O SO 2 4. CHCl 3 (see note) CH 2 Cl 2 Note: If two molecules have both dipole-dipole and dispersion forces, then the molecule with the stronger dispersion force (ie. higher MW) will have the higher boiling point. Suggested practice problems: 7, 9, 11, 13, 15, 25, 27, 29, 33, 37, 39, 41, 43, 45, 49, 51...
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This note was uploaded on 09/17/2009 for the course CH 101 taught by Professor Bigham during the Spring '08 term at N.C. State.

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Ch7 Worksheet - the highest relative boiling point Fill in an arrow pointing in the direction of the highest boiling point Strongest IM force

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