Answer
a) Ketopentose has 2 chiral carbon atoms and so the possible stereoisomers are 2^2 = 4
b) Ketohexose has 3 chiral carbon atoms and so the possible stereoisomers are 2^3 = 8
c) Ketooctose has 5 chiral carbon atoms and so the possible stereoisomers are 2^5 = 32
Work Step by Step
a) Ketopentose has 2 chiral carbon atoms and so the possible stereoisomers are 2^2 = 4
b) Ketohexose has 3 chiral carbon atoms and so the possible stereoisomers are 2^3 = 8
c) Ketooctose has 5 chiral carbon atoms and so the possible stereoisomers are 2^5 = 32
