Organic chemistry chapter 4

Stereoisomers have the same
molecular formula and
connectivity but different
arrangements of atoms in
three-dimensional space.
Answer
a) C6H 14 = formula of alkane
C6H12 = fonnula of2-hexene
H2 = difference = 1 pair of hydrogen atoms
Index of hydrogen deficiency = 1
b) C6H14 = formula of alkane
C6H12 = formula of methylcyclopentane
H2 = difference = I pair of hydrogen atoms
Index of hydrogen deficiency =1
(c) No, all isomers OfC6HI2, for example, have the same
index of hydrogen deficiency.
(d) No
e) C6H 14 = formula of alkane
C6H10 = formula of 2-hexyn
H4 = difference = 2 pair of hydrogen atoms
Index of hydrogen deficiency = 2
f) C10H 22 =(Alkane)
C10H16 = (compound)
H6 = difference = 3 pair of hydrogen atoms
Index of hydrogen deficiency = 3
the structural possibilities are:
3 double bonds
1 double 1 triple bonds
2 double bonds one ring
1 double bonds two rings
3 rings
1 triple bond 1 ring