Organic Chemistry I

Professor Carl C. Wamser

Chapter 1 Pre-Quiz

You must log on to WebCT to submit your answers.

Your answers must be submitted before 8:30 am, Wed., Sept. 29

1. The natural amino acid cysteine has the molecular formula C3 H7 N O2 S .
The most electronegative element in cysteine is

a. C  
b. H  
c. N  
* d. O  
e. S  

2. The molecular shape of H2O (considernig only the positions of the atoms) is described as

a. linear  
* b. bent  
c. trigonal planar  
d. tetrahedral  
e. octahedral  

3. In the best resonance form for the compound nitromethane, the formal charge on N is

a. 0  
b. -1  
c. -2  
* d. +1  
e. +2  

4. The strongest base in the list below is

a. water  
b. ammonia  
* c. dimethylamine  
d. bicarbonate  
e. carbonate  

5. The C-O bond in methanol would be described as

a. ionic  
b. covalent - nonpolar  
* c. covalent - polar, with partial + on C  
d. covalent - polar, with partial - on C