# An alkane has a molecular mass of 72. Draw its possible chain isomers.

420 Points
13 years ago

Dear Deva

First of all, we will derive the molecular formula.

Molecular formula of alkane is CnH2n+2

As molecular mass = 72,

12n + 2n + 2 = 72

n = 5

The alkane is C5H12. The possible chain isomers are

and

All the best.

AKASH GOYAL

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12 Points
10 years ago
you are a dumbass this question doesn`t even make sense. I don`t understand why you would even try to evaluate this question????????
4 years ago
Dear student,

Molecular formula of alkane is CnH2n+2
As molecular mass = 72,
12 x n + 1 x (2n + 2) = 72
or, 14n + 2 = 72
n = 5
The alkane is C5H12.
Hence, the possible chain isomers are the chain isomers of C5H12

Thanks and regards,
Kushagra