Assignment 4: Hyd en Bonding. Polarity and Solubility On a page titled Hydrogen Bondin with Water print/draw the expanded structure of your molecule. (If the structure already contains any dashed lines, make them solid (non- dashed) covalent bonds for this assignment so that they are not confused with hydrogen bonds) o Illustrate all the locations where your molecule could form hydrogen bonds with water either as a hydrogen donor oras a target (receiver) of hydrogen bonds from water. Do this by drawing bent water molecules as necessary and representing hydrogen bonds between water and the molecule using dashed lines. Be sure it is clear exactly which atoms on each molecule are involved in the hydrogen bonds. o If your molecule is not capable of forming hydrogen bonds with water explain why not. o One example of how to represent hydrogen bonding is illustrated below. The molecule is a receiver of hydrogen bonding from water at the oxygen of the carbonyl group On a page titled Polarity and Solubility Predictions draw/print the structural formula of your molecule (expanded or condensed) o Circle or highlight all polar portions of the molecule o Make predictions whether your molecule will be soluble in water or not and explain your rational. Note that there may be no correct answer as often solubility must be tested. Therefore the explanation may be more important the prediction itself.
