Use the information below to answer the following questions.
a)
Which of the above represent an aldose?
a. only 1 and 2
b. only 1 and 3
c. only 2 and 3
d. 1, 2 and 3
b)
Which of the above would not be oxidized by an aqueous solution of Br
2?
a. only 1
b. only 2
c. only 3
d. all of these
Question 2Which of the following has a D-configuration?
a.
only 1 and 2
b.
only 1 and 3
c.
only 2 and 3
d.
only 1, 2 and 3
Question 3Refer to the carbohydrate below to answer the following questions.
a)
Which carbon in the carbohydrate is the anomeric carbon?
b)
Does this represent an a or b-anomoer?
Question 4What is the relationship between D-erythrose and D-threose?
a.
they are constitutional isomers
b.
they are enantiomers
c.
they are diastereomers
d.
they are tautomers
Question 5Which reagent would be best suited for the transformation shown?
a.
alkaline Cu
2+ in H
2O
b.
Ag
+ in H
2O/NH
3 c.
H
2, with Ni catalyst
d.
NaNO
3 at 0C
e.
NaBH
4 in H
2O
Question 6Which of the following could
not form a pyranose?
a.
D-threose
b.
D-ribose
c.
D-lyxose
d.
D-glucose
e.
D-galactose