Find the structures for acetone, urea and all the other reagents used in this la

Question

Find the structures for acetone, urea and all the other reagents used in this lab. Discuss the interactions these molecules can have with both water and the protein. How does each of these affect the folding state? Use the nature of the intermolecular forces to explain. Develop a hypothesis to explain why the protein is folded in its native state. A protein contains an amino acid with COO side-chain group. Would this amino acid be more likely found on the interior or exterior of a protein in its native structure? Why? . . Draw the Lewis structure of acetone and answer the following a. Which if any H-atoms in acetone can participate in hydrogen bonding? b. Which if any non H-atoms in acetone can participate in hydrogen bonding? c. Is acetone capable of forming hydrogen bonds? If yes, does acetone function as a hydroger donor, a hydrogen acceptor, or both? Explain. This experiment was adapted rom: a) Bouen.R; Hartung, R.; Gindt, Y.M. .Chem. Educ 2000, 77, 1456. b) Hellar,B.A.; Gindt,Y.M. J. Chem. Educ. 2000, 77 1458.

Explanation / Answer

a) no hydrogens can form hydrogen bonding in acetone.

b)The hydrogen bonding bond would be O-H-O, from the Oxygen in acetone to the Hydrogen in water to the Oxygen in water

c)a molecule can only be a h-bond donor if it has 1 (or more) hydrogen atoms bonded to oxygen, nitrogen (and in theory also fluorine)  
In acetone since the hydrogen atoms are bonded to carbon, acetone can not be a h-bond donor (but a h-bond acceptor)

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