Question

The number of structure isomers possible from the molecular formula `C_(3)H_(9)N` is:
A. 2
B. 3
C. 4
D. 5

Answer 1

Correct Answer - C
Since the molecular formula `C_(3)H_(9)N` corresponds to `C_(n)H_(2n) +3 N(n =3)` the compound is an aliphatic amine It could be a primary amine `(RNH_(2))`
`CH_(3)CH_(2)CH_(2)NH_(2) CH_(3) overset(CH_(3))overset(|)(C )H-NH_(2)`
or a secondary amine (RNHR) :
`CH_(3)CH_(2)NHCH_(3)`
or tertiary amine `(R_(3)N):`
`H_(3) C - underset(CH_(3))underset(|)(N)-CH_(3)`