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Grade 12Organic Chemistry

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

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15 Years agoGrade 12
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3 Answers

Profile image of AKASH GOYAL AskiitiansExpert-IITD
ApprovedApproved Tutor Answer15 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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Profile image of lanoaha brady
12 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????????
Profile image of Kushagra Madhukar
5 Years 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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