RelativeResourceManager-3 - Chem 140C Practice Midterm II...

Chem 140C
Practice Midterm II
May 2010
Q1_________(8 points)
Q2_________(10 points)
Q3_________(15 points)
Q4_________(20 points)
Q5_________(20 points)
Q6_________(20 points)
Q7_________(7 points)
Total_________(100 points)
Only use the front side of each page for your answers. Nothing on the back sides will be graded. If you
write the exam in pencil or erasable pen, you give up your right to any kind of regrade.
Name_______________________
PID#_________________________

1. Carbohydrates (8 points).
A carbohydrate of D-configuration and unknown structure is subjected to exhaustive periodic acid
oxidation and yielded one equivalent of formaldehyde and four equivalents of formic acid for each
equivalent of carbohydrate oxidized. Draw all of the possible structures of the carbohydrate in Fisher
projections.

2. Acidity and Basicity (10 points).
Circle the 5 most acidic hydrogens in the molecule below and place them in order of their acidity with
#1 being the most acidic and #5 being the least acidic. Work carefully. There will be no partial credit
or regrades on this problem.