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

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

Grade:12

3 Answers

AKASH GOYAL AskiitiansExpert-IITD
419 Points
10 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

 

chain isomers of C5H12

and

 

 

All the best.                                                           

AKASH GOYAL

AskiitiansExpert-IIT Delhi

 

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lanoaha brady
12 Points
7 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????????
Kushagra Madhukar
askIITians Faculty 629 Points
one year ago
Dear student,
Please find the solution to your problem.
 
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

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