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Slides 2 through 5 were part of a series on H bonding.

Slides 2 through 5 were part of a series on H bonding. . Is acetone an H bond donor?. a. yes b. no c. can’t be determined. Is acetone an H bond acceptor?. a. yes b. no c. can’t be determined. Would there be H bonding in pure acetone?.  a. yes b. no c. can’t be determined.

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Slides 2 through 5 were part of a series on H bonding.

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  1. Slides 2 through 5 were part of a series on H bonding.

  2. Is acetone an H bond donor? a. yes b. no c. can’t be determined

  3. Is acetone an H bond acceptor? a. yes b. no c. can’t be determined

  4. Would there be H bonding in pure acetone?  a. yes b. no c. can’t be determined

  5. Would there be H bonding in acetone that had water dissolved in it? a. yes b. no c. can’t be determined

  6. 2-methylpropane and isopropyl alcohol have comparable molecular weights. Which substance will have stronger intermolecular interactions between its molecules? a. 2-methylpropane b. isopropyl alcohol c. ~same

  7. What type of solvent would concentrated sulfuric acid be? • Nonpolar • Hydroxylic • Polar Aprotic • None of the above

  8. Slides 9 – 11 were part of a series covering H bonding and solubility. In slide 10, the pictures were not shown when the question was asked. A significant number of students answered yes. Then the pictures were shown the pictures and they were asked again.

  9. Carbohydrates would be expected to be readily soluble in water because they have many sites capable of H-bonding with water.

  10. Would cellulose be soluble in water? • yes • no • can’t be determined

  11. However, cellulose has many OH groups that should readily H-bond with water, yet it doesn’t dissolve. • In this case, the intermolecular attraction through H-bonding between the cellulose chains due to the way they line up is so strong, that solvation does not occur easily

  12. H-Bonding in Amines Are 1 amines capable of H-bonding with themselves? • yes b. no c. impossible to determine

  13. Amine Structure Are 3 amines capable of H-bonding with themselves? • yes b. no c. impossible to determine

  14. Physical Properties If an amine is capable of H bonding does that increase or decrease its m.p. and b.p. relative to other compounds of similar polarity and m.w.? • increase b. decrease c. neither

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