November 27, 2006
1. Write the Lewis structures of the molecules listed below and determine the hybridization of the carbon present. a) carbon dioxide; b) potassium carbonate c) Bromotriclorometano d) Hydrogen cyanide, e) Formaldehyde f) formic acid. (4)
2. Giving names to the molecules described below: (6)
3. The IUPAC name acid threonine protein is present in the acid 2-amino-3-hydroxybutanoic. Write all possible stereoisomers and indicate those belonging to the series steric L. (5)
4. dicarboxylic acids succinic, malic and tartaric acid are all present in varying amounts in wines. They are 0, 1 and 2 hydroxyl in the structure that contains a total of 4 carbon atoms. Write the structure and give the IUPAC name to all acids. Also indicate the presence of chiral centers and write the corresponding stereoisomers. (8)
5. Indicate the relationship between acid isomers (2S, 3R)-3-fluoro-2-hydroxy butanoic 1 and the structures af. (7)
0 comments:
Post a Comment