king
Last Activity: 11 Years ago
. The general formula of alkane is CnH2n+2.
Its molecular mass would be = 12 (n) + 1 (2n + 2) = 14n + 2
Given molecular mass = 86
14n + 2 = 86
?
n=6
? Molecular formula of the alkane is C6H14.
The possible isomers for this molecular formula are:
1. CH3 – CH2– CH2–CH2 – CH2 – CH3
2.
CH3 – CH2 – CH2 – CH – CH3
CH3
2 - Methylpentane
3.
CH3 – CH2 – CH – CH2 – CH3
CH3
3 - Methylpentane
CH3
4.
CH3 – CH2 – C – CH3
CH3
2,2 - Dimethylbutane
5.
CH3 – CH – CH – CH3
CH3
CH3
2,3 - Dimethylbutane
Thus, five isomers are possible for C6H14